“The comprehensive utilization of fluor gypsum waste from national fluoride companies has always been the focus of the relevant departments in the country. Our company has developed a technology to produce new wall material—gypsum hollow block using fluorogypsum waste residue. This is Li Guo Limin. The good thing, but the process of product promotion has not imagined so smoothly.†On August 7, Zhang Gengfu, general manager of Anhui Senke New Materials Co., Ltd. complained to reporters. Due to people's preference for traditional wall materials, gypsum-based hollow block, a new material that is inexpensive and environmentally friendly, has not been able to open the door to the building materials market and has caused these companies with technology to suffer. The company calls on the relevant national departments and industry associations to play an active leading role in advocating the use of new building materials and giving new materials a space for development.
It is understood that due to the recovery of the global economy and the country's relevant industrial policies, the fluorine chemical industry has entered a golden era of development. With the rapid development of the hydrogen fluoride industry, the amount of waste slag produced by the use of acidolysis of fluorspar to produce hydrogen fluoride is increasing, and its comprehensive utilization has also been increasingly influenced by the relevant government of the country. Departmental attention.
It is understood that for every 1 ton of hydrogen fluoride produced by a hydrogen fluoride enterprise, about 3.6 tons of industrial waste slag fluorspar will be discharged, and enterprises need to free up large sites for stacking. As the accumulation of fluorinated gypsum will pollute the environment, the national environmental protection department requires that the fluoro-gypsum waste residue must be disposed of in time. At present, most of the hydrogen fluoride production enterprises generally use it for the production of cement retarders and mineralizers. However, due to the strong seasonality of cement production, certain restrictions have been imposed on the normal production of hydrogen fluoride. In addition, the added value of fluorogypsum waste residue for cement processing is relatively low, only 40 to 60 yuan per ton, and the economic efficiency is poor. Therefore, the comprehensive utilization of fluorinated gypsum has been unsatisfactory.
Zhang Chengfeng, deputy general manager of Anhui Senke Co., Ltd., told reporters that some domestic companies have also adopted other methods of treatment, that is, fluorinated gypsum is immersed for three months in a fully water environment, and basically converted into dihydrate, calcium, and then crushed. Calcined into building gypsum powder and reconstructed building materials such as gypsum board, gypsum hollow block, gypsum board, plastering gypsum. "But this practice requires a lot of aging storage yards, but also confusing and calcining process equipment. Due to the large investment and market reasons, it is difficult to maintain production." Zhang Chengfeng said.
"Our company accelerates its dissolution, crystallization, and crystal growth by adding a certain amount of water, an appropriate activator and an early strength agent to the anhydrous fluorinated gypsum powder, and coagulates and hardens into a gelling material. The initial setting time is only 4 In minutes, the final setting time is about 15 minutes, which satisfies the need for efficient continuous production of gypsum block production lines.At present, the technology has produced different specifications and types of gypsum hollow block in the company's gypsum hollow block mobile casting production line. A production line can consume 10,000 tons of fluorinated gypsum waste. The investment cost is 1/8 to 1/10 of the investment cost of the existing wall materials, said the director of the company's technical department, Qian Yudong.
“The physical and mechanical performance indexes of gypsum hollow blocks are in line with the requirements of the national building materials industry standard for gypsum blocks JC/T698-2010. Compared with similar wall materials, they have good sound insulation effect, strong insulation performance, cool winter temperature, and high hardness. Lightweight material, waterproof and fireproof, smooth surface, no need for painting, cracking, energy saving, low carbon energy. We have applied for invention patents for new technologies such as fluoroplast hollow block and its preparation method.†said Zhang Gengfu .
“Despite this, this product is still difficult to promote in the promotion process. People can not safely accept this new type of building materials, always hold the attitude of doubting the letter. The dominant position of traditional building materials is deeply rooted in people's ideas, construction. The reform of the material is still struggling." Zhang Gengfu reluctantly stated.
Zhang Gengfu told reporters, in fact, relevant national authorities already have relevant documents to support the comprehensive utilization of fluorplasts. In February this year, the Ministry of Industry and Information Technology's Guiding Opinions on the Comprehensive Utilization of Gypsum for Industrial By-Products pointed out that the emphasis is on single-line capacity of 300×103m2 and above. Gypsum block production line construction. According to statistics, “The 12th Five-Year Plan for the Comprehensive Utilization of Major Industrial Solid Wastes†will also be released around September. These policies are all actually supporting the comprehensive utilization of fluorinated gypsum.
"Accordingly, the technical indicators have been qualified, national policies are also supported, production costs are still very low, this matter can be regarded as everything is ready, but the facts show that the real investment in the project is very few, everyone only stays in the wait-and-see stage. Or is it a bit of an eclipse, that is, the concept of users is changing." Zhang Gengfu said.
“We hope that the relevant authorities of the country can actively guide and increase the promotion of the use of their products based on a comprehensive review of the industrial by-product gypsum products. It is also hoped that the association of building materials can actively advocate and expand the building blocks including fluorogypsum. The vast market of new building materials in China leads a revolution in building materials, and at the same time, for projects that can contribute to national environmental protection, it is hoped that the country will issue preferential fiscal and taxation policies to support the growth of new students and achieve The industrialization and scale-up of comprehensive utilization of industrial by-product gypsum will enable good technologies to truly benefit the nation and the people," said Zhang Gengfu.
It is understood that due to the recovery of the global economy and the country's relevant industrial policies, the fluorine chemical industry has entered a golden era of development. With the rapid development of the hydrogen fluoride industry, the amount of waste slag produced by the use of acidolysis of fluorspar to produce hydrogen fluoride is increasing, and its comprehensive utilization has also been increasingly influenced by the relevant government of the country. Departmental attention.
It is understood that for every 1 ton of hydrogen fluoride produced by a hydrogen fluoride enterprise, about 3.6 tons of industrial waste slag fluorspar will be discharged, and enterprises need to free up large sites for stacking. As the accumulation of fluorinated gypsum will pollute the environment, the national environmental protection department requires that the fluoro-gypsum waste residue must be disposed of in time. At present, most of the hydrogen fluoride production enterprises generally use it for the production of cement retarders and mineralizers. However, due to the strong seasonality of cement production, certain restrictions have been imposed on the normal production of hydrogen fluoride. In addition, the added value of fluorogypsum waste residue for cement processing is relatively low, only 40 to 60 yuan per ton, and the economic efficiency is poor. Therefore, the comprehensive utilization of fluorinated gypsum has been unsatisfactory.
Zhang Chengfeng, deputy general manager of Anhui Senke Co., Ltd., told reporters that some domestic companies have also adopted other methods of treatment, that is, fluorinated gypsum is immersed for three months in a fully water environment, and basically converted into dihydrate, calcium, and then crushed. Calcined into building gypsum powder and reconstructed building materials such as gypsum board, gypsum hollow block, gypsum board, plastering gypsum. "But this practice requires a lot of aging storage yards, but also confusing and calcining process equipment. Due to the large investment and market reasons, it is difficult to maintain production." Zhang Chengfeng said.
"Our company accelerates its dissolution, crystallization, and crystal growth by adding a certain amount of water, an appropriate activator and an early strength agent to the anhydrous fluorinated gypsum powder, and coagulates and hardens into a gelling material. The initial setting time is only 4 In minutes, the final setting time is about 15 minutes, which satisfies the need for efficient continuous production of gypsum block production lines.At present, the technology has produced different specifications and types of gypsum hollow block in the company's gypsum hollow block mobile casting production line. A production line can consume 10,000 tons of fluorinated gypsum waste. The investment cost is 1/8 to 1/10 of the investment cost of the existing wall materials, said the director of the company's technical department, Qian Yudong.
“The physical and mechanical performance indexes of gypsum hollow blocks are in line with the requirements of the national building materials industry standard for gypsum blocks JC/T698-2010. Compared with similar wall materials, they have good sound insulation effect, strong insulation performance, cool winter temperature, and high hardness. Lightweight material, waterproof and fireproof, smooth surface, no need for painting, cracking, energy saving, low carbon energy. We have applied for invention patents for new technologies such as fluoroplast hollow block and its preparation method.†said Zhang Gengfu .
“Despite this, this product is still difficult to promote in the promotion process. People can not safely accept this new type of building materials, always hold the attitude of doubting the letter. The dominant position of traditional building materials is deeply rooted in people's ideas, construction. The reform of the material is still struggling." Zhang Gengfu reluctantly stated.
Zhang Gengfu told reporters, in fact, relevant national authorities already have relevant documents to support the comprehensive utilization of fluorplasts. In February this year, the Ministry of Industry and Information Technology's Guiding Opinions on the Comprehensive Utilization of Gypsum for Industrial By-Products pointed out that the emphasis is on single-line capacity of 300×103m2 and above. Gypsum block production line construction. According to statistics, “The 12th Five-Year Plan for the Comprehensive Utilization of Major Industrial Solid Wastes†will also be released around September. These policies are all actually supporting the comprehensive utilization of fluorinated gypsum.
"Accordingly, the technical indicators have been qualified, national policies are also supported, production costs are still very low, this matter can be regarded as everything is ready, but the facts show that the real investment in the project is very few, everyone only stays in the wait-and-see stage. Or is it a bit of an eclipse, that is, the concept of users is changing." Zhang Gengfu said.
“We hope that the relevant authorities of the country can actively guide and increase the promotion of the use of their products based on a comprehensive review of the industrial by-product gypsum products. It is also hoped that the association of building materials can actively advocate and expand the building blocks including fluorogypsum. The vast market of new building materials in China leads a revolution in building materials, and at the same time, for projects that can contribute to national environmental protection, it is hoped that the country will issue preferential fiscal and taxation policies to support the growth of new students and achieve The industrialization and scale-up of comprehensive utilization of industrial by-product gypsum will enable good technologies to truly benefit the nation and the people," said Zhang Gengfu.
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