Project name: 2× 4000t/d cement raw meal and clinker sintering system technical transformation project of Zhejiang Changxing Cement Co., Ltd. 1# line
Construction site: Changxing
Publicity time: 06/8/22-06/8/29 Contact: Ministry of Construction
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The main contents of acceptance:
I. Basic information of the project
Guangyu Group Co., Ltd. makes full use of the advantages of limestone resources, electricity, transportation and market in Changxing County, and chooses Gaowan Natural Village, Shiquan Village, Lijiaxiang Town, Changxing County as the site of technical transformation project, and plans to reserve the site to expand the production line.
Approved construction scale: auxiliary production projects such as 2× 4,000 tons/day cement raw meal and clinker burning system and wharf will be built, with an annual output of 3.765 million tons of cement raw meal and 2.48 million tons of commercial clinker. At the same time, the waste heat power generation system and expansion space are reserved.
At present, the construction scale has been completed: 4,000 tons/day auxiliary production projects such as cement raw meal and clinker firing system 1# production line and wharf, forming an annual production capacity of 654.38+883 million tons of cement raw meal and 654.38+240,000 tons of commercial clinker.
On June 5438+ 10, 2004, Zhejiang Environmental Protection Science Design and Research Institute completed the preparation of the environmental impact report of the project, and on June 5438+ 10, 2004, Zhejiang Environmental Protection Bureau established < 2004 >; 13 document "Letter on the review opinions of the environmental impact report of the technical transformation project of Zhejiang Changxing Cement Co., Ltd. with a daily output of 2× 4,000 tons of cement raw materials and clinker burning system" gave a reply to the EIA report of the project.
The project started construction on June 5438+ 10, 2004, and the first production line (1 #) was put into trial production in May 2005, and the supporting environmental protection facilities were put into production at the same time.
Second, implement environmental protection.
Zhejiang Changxing Cement Co., Ltd. has a daily output of 2×4000 tons of cement raw meal and clinker sintering system. The total investment of environmental protection facilities in 1# line is 265,438+707,000 yuan, accounting for 3.68% of the total investment. 36 dust collectors and domestic sewage treatment devices (with a treatment capacity of 240 tons/day) were installed in the implementation part of the project. By selecting low-noise equipment and reasonable plant layout, the noise pollution of the project was reduced.
Three. Acceptance monitoring and investigation results
Zhejiang Environmental Monitoring Center conducted on-site monitoring of the project in June 2005 and compiled a monitoring report. According to the monitoring results, the main results of the environmental protection acceptance monitoring report submitted are as follows:
1, working conditions during monitoring
During the acceptance monitoring, the operating load of rotary kiln of 1# production line is 96.5~ 1 17.2%, and the operating load of other production equipment is 84.0 ~ 100.0%, which conforms to GB 4915-190.
2. Exhaust gas conclusion
2. 1 Under normal working conditions, the concentration of smoke (powder) dust at the outlet of 36 dust collectors is lower than the corresponding limit specified in the secondary standard of GB49 15- 1996, which meets the requirements of national emission standards; At the same time, the emission concentration of smoke (powder) dust from kiln head, kiln tail and coal mill is less than 50mg/m3, which meets the requirements of Zhejiang Environmental Protection Bureau.
2.2 Under normal working conditions, the emissions of tons of smoke (powder) and dust products of rotary kiln, coal mill, limestone crusher, sand shale crusher and bulk clinker in this project are all lower than the corresponding limits in the secondary standard of GB49 15- 1996 Emission Standard for Air Pollutants in Cement Plants, which meets the requirements of national emission standards.
2.3 The dust removal efficiency of the electrostatic precipitator at the kiln head and kiln tail of the 1# line of this project reaches the original engineering design index; The dust removal efficiency of 23 of the other 27 dust collectors tested reached the original engineering design index; However, the dust removal efficiency of 2#, 3# and 5# dust collectors transported by raw material terminal and 3# dust collector transported by raw coal is lower than the original engineering design index. The main reason is that the materials transported during the monitoring period are wet, and the excess air volume of some supporting dust collectors is large, which leads to the low dust concentration at the entrance of the dust collector and the relative dust removal efficiency is not high.
2.4 Under normal working conditions, the concentration of sulfur dioxide, nitrogen oxides and fluoride at the outlet of the dust collector at the end of the rotary kiln of this project 1# production line and the emission per ton of products are all lower than the corresponding limits specified in the secondary standard of GB49 15- 1996 Emission Standard for Air Pollutants in Cement Plants, which meets the requirements of national emission standards.
2.5 Under the normal production conditions of this project 1# production line, the unorganized dust emission at the factory boundary of Zhejiang Changxing Cement Co., Ltd. meets the secondary standard requirements of GB49 15- 1996 Emission Standard for Air Pollutants in Cement Plants.
3, wastewater conclusion
3.65438+ At the same time, Zhejiang Changxing Cement Co., Ltd. centrally treated the domestic sewage in the factory area and installed a domestic sewage treatment device to centrally treat the domestic sewage. After advanced treatment, the wastewater is used to supplement the circulating cooling water, which basically realizes zero discharge of wastewater.
3.2 After the domestic sewage is treated by the treatment device, the concentrations of CODcr, BOD5 and ammonia nitrogen in the wastewater meet the requirements of CJ25. 1-89 Water Quality Standard for Domestic Miscellaneous Water, and the concentration of suspended solids is slightly higher than the standard limit of CJ25. 1-89 Water Quality Standard for Domestic Miscellaneous Water. However, the concentration and pH value of suspended solids, CODcr, BOD5, ammonia nitrogen, petroleum and phosphate in wastewater can meet the first-class standard requirements of GB8978-96 Integrated Wastewater Discharge Standard. The treated wastewater basically meets the requirements of reclaimed water reuse.
3.3 The removal rate of suspended solids by domestic sewage treatment device is 78.0 ~ 88.2%, CODcr is 54. 1%, BOD5 is 64.9 ~ 68. 1%, and ammonia nitrogen is 58.7 ~ 64.5%.
4. Noise conclusion
4. 1 Zhejiang Changxing Cement Co., Ltd. The daytime noise level at the boundary of the plant is 46.5 ~ 67.3 dB (a), of which the daytime noise of 5# and 8# measuring points exceeds the standard, and the daytime noise of other measuring points reaches the standard; The noise level at night at the factory boundary is 40.2 ~ 56.2 dB (a), among which the noise at night at 2#, 5#, 6# and 8# measuring points all exceed the standard, and the noise at night at other measuring points all meet the standard.
4.2 Under the normal operation of the conveyor belt of the raw material wharf, the daytime noise of Qiangen Home in Gaowan Natural Village outside the boundary of the company's north factory meets the standard requirements; When the conveyor belt of raw material wharf stops, the noise of Qiangen Jia Ru meets the standard requirements day and night.
4.3 Under normal production conditions, the noise of Tianjia, a high-rise factory in Shiquan Natural Village outside the boundary of the West Factory, exceeds the standard day and night, which is 2.8 ~ 8.2 dB (a) during the day and 8.6 ~ 15.5 dB (a) at night. The day and night noise of Shiquan Village Committee outside the factory boundary on the southwest side meets the standard requirements. The above sensitive points are within the health protection distance and should be relocated according to the commitment of the local government.
5. Overall control conclusion
According to Zhejiang Environmental Protection Bureau, Zhejiang Environmental Protection Bureau
Four. suggestion
1. The demolition of the first phase 15 households within the health protection distance should be completed before the end of 2006, and the demolition of the remaining households should be completed before the completion and commissioning of Line 2, which is the responsibility of the Lijiaxiang Town Government, and submit the demolition plan to do a good job for the local people to ensure the avoidance of disputes between factories and groups.
2. Accelerate the installation and networking of the on-line monitoring system for flue gas at the kiln end, and do a good job of checking.
3. Further take noise elimination and noise reduction measures to reduce the impact of noise on the surrounding environment and ensure that the noise at the factory boundary and the dock reaches the standard; Further reduce the total emission of nitrogen oxides; Renovation of clinker, coal-fired wharf and open storage yard to reduce unorganized emissions.
4. Strengthen the operation and management of the factory and environmental protection facilities to ensure the stable discharge of pollutants.
5. Implement environmental management institutions and improve the environmental management system; Formulate emergency plans, implement emergency measures, establish accident emergency reservoirs, and report to local environmental protection departments for the record.
Zhejiang Changxing Cement: Silent Change July, 2007 17 Protective Color: Default White Petunia Purple Apple Green Desert Yellow Rose Font: Small print and large print When we comb and comment on the structural adjustment of Zhejiang cement industry with great respect, there is one place that cannot be ignored: there are a large number of well-known enterprises in China cement industry, such as Zhejiang Shisan, Zhejiang Shan Ying, Zhongsheng Cement, Zhejiang Jinlong, etc., and the cement output accounts for very much of the total cement output in Zhejiang. Here, the country's first incentive policy for the elimination of cement machine shaft kiln was introduced, which took the lead in completing the elimination goal of backward cement production methods in the province; Zhejiang's first 1000t/d, 2,500t/d and 5,000t/d new dry-process cement production lines were invested here, and the first 2500t/d and 5,000t/d domestic pure low-temperature waste heat generator set was successfully put into production. ...
This is Changxing County, Zhejiang Province. A place located in the north of Zhejiang, bordering Jiangsu and Anhui, with superior geographical position, rich mineral resources and unique development of cement industry. Here, the "Oriental Rhine River" with a total length of1.43km-Changhusheng Golden Waterway meets Xitiaoxi, gracefully crosses an arc, and goes eastward, quietly connecting Changxing on the west bank of Taihu Lake and Shanghai on the Huangpu River, adding openness and global vision to Changxing, which is located inland.
The structural adjustment of cement industry in Changxing county has sample significance in Zhejiang and even the whole country. 1999 in 2005, Changxing county party Committee and county government seriously implemented the national industrial policy from the requirements of scientific development, harmonious development and sustainable development. In 2003, after repeated consultations with local cement enterprises, they made a forward-looking development plan for cement clinker base in Changxing County. In February, 2004, under the excellent situation of Zhejiang cement market, Changxing county party committee and county government clearly put forward in "Several Opinions on Accelerating the Development of Industrial Economy" that during the Tenth Five-Year Plan period, the cement production of mechanical shaft kiln will be eliminated, and the cement enterprises that dismantle mechanical shaft kiln will be given a one-time reward, and each mechanical shaft kiln will be given a reward of 300,000-500,000 yuan.
With the joint efforts of government promotion, planning guidance, market decision and enterprise awareness, Changxing County Government quietly dismantled 38 mechanical shaft kilns, 4 small dry rotary kilns and 5 large wet rotary kilns with only 9.05 million yuan of incentive funds, and took the lead in eliminating backward cement production methods in the province two years ahead of schedule. At the same time, cement production lines with a daily output of 2,500 tons and above were built 10, and the production capacity of new dry-process clinker exceeded100000 tons/year, realizing the goal of building Changxing into a new dry-process cement clinker production base proposed by Zhejiang Economic and Trade Commission. The development of cement industry here has influenced the historical process of structural adjustment of Zhejiang cement industry.
In this quiet change, what kind of ups and downs have mechanical shaft kiln cement enterprises experienced here, what kind of mental journey have they had, and how have they developed? Not long ago, the reporter made a long-awaited return visit. When we look back and touch this past, we can still experience and feel the ups and downs of fate and career from the intersection of the destinies of all sentient beings.
Living here quietly turned a corner.
Lin Song, who is nearly 30 years old, is the deputy general manager of Changxing Baixian Cement Co., Ltd. Now he drives 10 kilometers to work in a place called Baixian Township every day. Accompanied by roaring machines and neighboring farmland and towering hillsides, talking loudly, drinking in large cups, eating in large bowls and eating meat in large chunks day after day make this handsome young man look more energetic, energetic and generous.
In 2004, Lin Song, who graduated from university, had worked in the local radio and television bureau for six years. This is not an easy-to-enter unit, nor is it a job where you can say goodbye casually. However, Lin Song's father Lin Yanbao is very busy. Among his enterprises, there are cement, coatings, stainless steel, batteries and other industries, and the enterprises span Jiangsu and Zhejiang provinces. More importantly, it's almost time to dismantle the company's vertical kiln. "Beat the tiger brothers, beat the father and son". At this turning point of dilemma, Lin Yanbao naturally played the idea of his son Lin Song.
Before that, Lin Song had no intention to participate in or interfere with his father's career. He could have chosen a cautious life path. However, fate has wonderfully combined his future with his father's career. His father's call and inner world's desire to challenge tradition and difficulties made him choose today's life.
Changxing Baixian Cement Co., Ltd. and its branch factory are about 2 kilometers away from Baixian Township. * * There is one machine shaft kiln with φ2.8× 10, φ2.9× 10 and φ 3×1respectively, with an annual production of more than 200,000 tons of cement. This year is very good. After 1999, the policies of Zhejiang Economic and Trade Commission on adjusting the structure of cement industry were introduced one after another. With the continuous production of new dry-process cement production lines, the market competitiveness of the two companies is self-evident.
In line with the idea of early elimination and early initiative, "Baixian Cement" demolished three vertical kilns in June 5438+February 2004, and developed the original cement industry into two parts through the overall planning of the county government and relevant departments. According to the principle of "total control and equal elimination", they invested in the construction of new dry-process cement clinker production lines in Xiaopu Zhongsheng and Jingshan Park Zhongsheng with the elimination index of vertical kiln of reprint machine, and the industrial investment direction was optimized. At the same time, "Baixian Cement" has undergone technical transformation, using a large mill and roller press with a diameter of 3.2×13m for grinding, and the clinker is supplied by the partner "Zhongsheng Cement". In 2005, a cement grinding station with an annual output of 600,000 tons was built, which continued the service to cement customers in the past. After the demolition of the mechanical shaft kiln in the branch factory, cement production was completely bid farewell, and 40 mu of land freed was used to set up a small refractory factory. Nearly one million kiln demolition incentive funds given by the government have been used for the above investment projects. Of course, this is not enough.
On the eve of the transformation of the grinding station, Lin Song left the Radio and Television Bureau to come to the enterprise. He laughed and said that the hardships and tiredness he encountered when he entered the factory could not be expressed in words, but all this gave him a solid enlightenment and make up lessons, shortening his time to integrate into the enterprise. He participated in the technical transformation of the cement grinding station all the time, and was later responsible for the production and operation of the enterprise. Now Lin Song is in charge of the cement grinding station. In 2006, Lin Song planted 3,000 trees in the open space, and this year planted more than 1000 trees, making the once dusty cement plant full of green.
Now it seems that Lin Song's choice may make the society lose a mediocre bureaucrat and gain an enterprise's talent.
The career has quietly taken a turning point here.
Many times, farewell is a choice, a responsibility and an awareness.
Zhejiang Xinminghua Building Materials Co., Ltd. is located in Changxing, Lijiaxiang, on the west side of 104 National Road. It turned out to be an enterprise engaged in the production of mechanical shaft kiln cement and white cement. Wang Xiaoshi, the chairman of the board of directors, is an entrepreneur with strong enterprising spirit and an old acquaintance of journalists for many years. From 200 1 to 2004, Xinminghua Building Materials * * * demolished three vertical kilns with diameters ranging from 2m to 2.8m. During these four years, Wang Xiaoshi actively sought new investment directions, paying special attention to environmental protection and comprehensive utilization of resources. They have carried out technical transformation on some facilities of the enterprise and invested millions of yuan to build a fine chemical workshop. Using the vacated 80 mu of land, we have recently started to discuss the cooperation intention of investing in the construction of 200,000 tons of light calcium carbonate with German merchants.
According to the technical personnel of "Xinminghua Building Materials", the reason why foreign businessmen favor them lies in the importance that enterprises attach to environmental protection. They built an ultra-fine calcium carbonate production line with an annual output of 80,000 tons, and designed a recovery device for carbon dioxide waste gas and calcium oxide waste residue, which can be used to produce calcium hydroxide, and part of calcium oxide waste residue can also be used to produce white cement. Now the water flow inside and outside the enterprise is clear and the air is fresh. The original sewage disposal enterprise has been transformed into an environmental protection enterprise for pollution control and waste utilization. The ex-factory price of activated calcium produced by them reaches 750 yuan/ton, light calcium carbonate 560 yuan/ton and 400 mesh heavy calcium carbonate are also sold to 290 yuan/ton. On the choice of enterprise development and social responsibility, Wang Xiaoshi's career has undergone gratifying changes.
Wang Jinhua, the 47-year-old general manager of Huzhou Yangshan Building Materials Co., Ltd., located at the foot of Yangshan Mountain in the east of Changxing, was transferred to buy this cement factory when Hongqiao Town was restructured in 2000. There were three shaft kilns in this enterprise, one of which was demolished on 1999 with a diameter less than 2.2m, and the other two were demolished in 2004 and 2005 respectively. During this period, he transformed the enterprise into a grinding station with an annual output of 500,000 tons of cement.
"Yangshan building materials" was originally evolved from a stone mining enterprise. There are many disabled people in the factory, so it is difficult to settle down and there are many problems left over. With the improvement of local mines, environmental improvement along expressway and market changes, governments at all levels in Changxing County negotiated with enterprises not to build the original 6,543.8+0,000-ton cement grinding station, and all the existing 500,000-ton cement grinding stations were eliminated, so enterprises could get various subsidies of 6,543.8+0,654.38+0,000 yuan. After discussion with shareholders, Wang Jinhua agreed to the government's plan. Wang Jinhua said that the market competitiveness of mechanical shaft kiln cement enterprises is poor, and the environmental pollution is serious. After the mechanical shaft kiln is dismantled, the utilization rate of plant equipment is low, and the burden on enterprises is too heavy, which has lost the future of survival and development. By taking the above measures, the government has effectively helped enterprises solve various contradictions brought about by the demolition of mechanical shaft kiln.
Not long ago, "Yangshan Building Materials" commissioned an auction company to sell all the factory buildings, facilities and equipment of the enterprise, and won an auction of 4.5 million yuan. Wang Jinhua and the shareholders intend to build a standard factory building on the former site for lease or development of other industries. At this point, enterprises have basically withdrawn from the cement industry, which can properly solve the remaining problems.
The industry has risen quietly here.
Zhou Shaochang, 60, has a loud voice and bright eyes, and looks much younger than his actual age. As an iconic figure in Changxing cement industry and even in Zhejiang cement industry, he is the only entrepreneur in Changxing County who has personally experienced the whole process from the development of cement vertical kiln to the new dry kiln with a daily output of 1000 tons, a daily output of 2,500 tons and a daily output of 5,000 tons. Every choice he makes almost represents a direction, a trend and a necessity. His life has concentrated the historical development process of small cement enterprises in villages and towns in China.
Changxing Jingshan Park Cement Plant is the ninth cement enterprise in Changxing County and the first cement enterprise in meishan town. At the beginning of 1982, the project could not be launched due to the shortage of funds. 1983 Zhou Shaochang, who entered the factory, is the fourth director of this enterprise. Without technology, talent and funds, what should we do? Local government leaders took Zhou Shaochang to Shanghai to contact compensation trade, and finally raised millions of yuan. The first mechanical shaft kiln with a diameter of 2.2m was built in 1986 65438+ 10. From 65438 to 0988, Zhou Shaochang raised funds to design a cement production line with an annual output of 50,000 tons. Through production, expansion and transformation, after several rounds of weak market and vigorous sales, after ten years of development, the enterprise finally established Zhejiang Shan Ying Building Materials Group in 1994, with six mechanical vertical kilns, with an annual output of more than 400,000 tons of cement and assets of nearly 40 million yuan.
Among the cement enterprises in the province, Zhou Shaochang is famous for his understanding of technology and daring to innovate. The original six mechanical shaft kiln cement production lines, except the first one, were all designed and built by Zhou Shaochang himself. It is the first in the province to adopt extruder technology, take the lead in adopting two-stage crushing and vertical crushing processes of raw materials, and jointly build the first new dry rotary kiln production line with daily output 1000 tons with foreign investors.
1994 Mr. Lin Guoren, a 93-year-old patriotic overseas Chinese in Singapore, took a fancy to Zhou Shaochang's character and talent and proposed to cooperate with him for development. The foreign investor invested 65 million yuan to buy 50% shares of "Zhejiang Shan Ying" and invested 200 million yuan to build a new dry rotary kiln cement production line with a capacity of 1 10,000 tons/day. Although the final investment was 250 million yuan, which took nearly three years to complete, due to various reasons, the operating efficiency of the enterprise was not good. 1999, Zhou Shaochang proposed to the board of directors for expansion and reconstruction, and then launched a new dry-process production line with a capacity of 2,500 tons/day. As a partner, the board of directors of overseas listed companies did not agree with this investment plan at first. They questioned: Why dig a second well without water? Zhou Shaochang added fuel to the flames and finally persuaded the board of directors that the production line was completed and put into operation at the end of 2002, costing 65.438+0.3 billion yuan and 65.438+00 months, which created considerable benefits the following year.
At the same time, Zhou Shaochang's 2500t/d new dry cement production line of Xiaopu Zhongsheng Cement Co., Ltd. with a financing of 65.438+0.5 billion yuan was completed and put into operation; At the end of 2003, Jingshan Park Zhongsheng Building Materials Co., Ltd. with an investment of only 258 million yuan and a production capacity of 5,000 tons/day was also completed and put into operation; In 2004, Zhou Shaochang built the first domestic 3 MW waste heat generator set on the new dry cement production line with a capacity of 2,500 tons/day, which realized energy saving and emission reduction in cement production.
Before two new dry production lines, Zhongsheng Cement and Zhongsheng Building Materials, were completed and put into operation, six mechanical shaft kilns in Shan Ying, Zhejiang Province were demolished. The enterprise has already got rid of the traditional small-scale production mode and become the only new dry-process cement enterprise that has survived the big wave of structural adjustment and developed from a mechanical shaft kiln cement enterprise. In 2005, Zhou Shaochang retired from "Shan Ying, Zhejiang" and now focuses on the management of "Zhongsheng Cement".
Zhou Shaochang is lucky. He experienced the rise, development and elimination of mechanical shaft kiln cement, accurately grasped the development direction and opportunity of new dry cement, and realized the industrial upgrading and rapid development of enterprises.
The local economy here has quietly developed.
Zhejiang Zhongxing Building Materials Group Co., Ltd. is the "originator" of mechanical shaft kiln cement enterprises in Changxing County, and built the first mechanical shaft kiln in the county. Zhejiang Zhongxing, which started as a "five small industries" in the 1970s, has developed from an annual output of 3,000 tons and 5,000 tons of cement to a production scale of 6,543.8+0.5 million tons. 199 1 year, they established Zhejiang xingbaolong building materials co., ltd in cooperation with Singapore baolong lime company and other partners, and invested more than 60 million yuan to build a 600-ton/day five-stage cyclone preheater kiln. The production line was put into production in 1 941. This is the first cement rotary kiln enterprise in Huzhou township enterprises.
Although "Zhejiang Zhongxing" cement shaft kiln is well managed, the comprehensive power consumption per ton of cement is below 75 kW, and the standard coal consumption per ton of clinker is below 1.40 kg, but in 1.999 and 2005, they still reluctantly demolished two mechanical shaft kilns. Now, Zhejiang Zhongxing has completely withdrawn from the cement industry and no longer participated in the production, operation and management of cement enterprises. In addition to investing in Xingbaolong Building Materials, it supported Xingbaolong Building Materials to transform its production line into a new dry rotary kiln with a capacity of 1.600/ day last year.
Now, the 55 mu of land vacated by the demolition of "Zhejiang Zhongxing" kiln has successfully developed new industries. The Sino-foreign joint venture Dida New Materials Co., Ltd. covers an area of 30 mu, the first phase of the project has an investment of 26 million yuan, and the fineness of calcium carbonate is 1500-5000 mesh. The second phase of the project is a production line of modified plastic additives. Zhongtai Refractory Co., Ltd., with an investment of180,000 yuan, covers an area of 20 mu and was put into production in 2006. The output and benefit of these two newly-built enterprises far exceed the contribution of cement production to local economic development.
According to estimates, after replacing various backward production processes with new dry cement production in Changxing County, the utilization rate of limestone resources has increased by about five percentage points, the dust emission has been reduced by half, the sulfur dioxide gas emission has been reduced by more than two thirds, and the harmful gas emissions such as fluorine and nitrogen oxides have reached the national standards, effectively improving the local air quality and living environment. At present, there are five enterprises that adopt pure low-temperature waste heat power generation technology, which can generate10.47 billion kwh per year, equivalent to10.8 million tons of standard coal. According to the 0.6 yuan per kilowatt hour, the production cost per ton of clinker can be reduced by about 1.6 yuan. Another four companies plan to complete the construction of pure low-temperature waste heat power generation projects this year and next. In 2006, the profit and tax of cement industry in Changxing County was 278 million yuan, a net increase of 22 times compared with 1998 before structural adjustment. The continuous and optimized development of cement industry has effectively promoted the growth of local economy and the improvement of people's lives.
It is worth mentioning that Zhejiang Shisan Group has fully played the leading role in the cement industry. They built the first new dry-process cement production lines with a capacity of 2,500 tons/day and 5,000 tons/day in the province, which set a good example for the construction of new dry-process cement production lines in Changxing. In 2004 and 2005, Zhejiang Shisan Group, Zhejiang Changguang Cement Co., Ltd. and other Changxing provincial enterprises took the initiative to dismantle four small dry rotary kilns and five large wet rotary kilns according to the requirements of industrial development and enterprise reality.
From the mechanical shaft kiln to the grinding station, to the new dry rotary kiln, or after quitting the cement industry completely, Changxing cement enterprises have made their own choices under the dual effects of the visible hand of local government and the invisible hand of market. Although their decision-making time is different, their adjustment process is different, their difficulties are different, and their development direction is different, but their determination and consciousness of thoroughly understanding industrial policies, adapting to market trends, relying on resource markets and optimizing capital investment have not changed. Through the dedicated service of the local government and relevant departments, we have solved problems for enterprises and ensured the smooth realization of the goal of enterprise transformation production and structural adjustment.
What is particularly commendable is that the withdrawal of such a huge industrial cluster of mechanical shaft kiln is as silent as dropping a stone on a wide lake, with no sound but wonderful ripples.