In January 2019, the "Zhengzhou City Refractory Industry Environmental Comprehensive Remediation Symposium" organized by the Zhengzhou City Environmental Pollution Prevention and Control Leading Group Office was held in the conference room of the Municipal Environmental Protection Bureau. Relevant experts from Tsinghua University and China Building Materials Institute were invited to attend the meeting. Zhengzhou Gongxin, the relevant person in charge of the Environmental Protection Bureau, Gongyi, Dengfeng, Xinmi City, the relevant person in charge of the Environmental Protection Bureau, Henan Province Refractory Industry Association, representatives of refractory enterprises in the area attended more than 60 people attended the meeting.
The meeting introduced the development of Zhengzhou refractory industry, and put forward a lot of suggestions for comprehensive environmental management in combination with its production practice. The experts presented guidance on the comprehensive treatment of pollutants generated by different equipment, temperature and fuel in the production process. opinion. The person in charge said that after summing up the opinions of everyone, report to the government to formulate a practical 2019 refractory comprehensive remediation plan as soon as possible.
The relevant person in charge of Henan Residents Association said at the meeting: Refractory materials are an indispensable important foundation and supporting material for the development of high-temperature industry, national defense military industry and new strategic industries. Since the construction of imported refractory materials by Shanghai Baosteel, the relevant state departments have attached great importance to it. The industry is growing. At present, advanced countries and regions such as Europe and the United States have also designated the industry as a strategic industry. Henan has also cultivated the industry as a dominant industry for many years. In recent years, the output of refractory materials in Henan Province accounts for nearly half of the national output. The production of refractory materials in Zhengzhou area accounts for about 65-70% of the province's output, and it is one of the major producing areas of refractory materials in China.
At present, the main performance of Zhengzhou refractory industry development: the industrial group has obvious advantages: the products are comprehensive, unique and complementary, and have been the main pillar industries in Xinmi, Gongyi and Dengfeng; : High-tech and high-value-added varieties of refractory materials have increased significantly. The materials have evolved from oxides to oxides and non-oxides. The raw materials used have grown from natural raw materials to natural raw materials and synthetic raw materials. Unshaped refractories account for the whole. The proportion of refractory materials has reached more than 42%, ranking first in all provinces and cities nationwide. Strong technical level and innovative ability: There are more than 60 provincial and municipal enterprise technology centers or technical engineering research centers. The province's Zhengda, Hekeda, Henan Polytechnic, Luoyang Institute of Technology and other universities and the Luoyang Refractory Materials Research Institute affiliated to the former Ministry of Metallurgy, the provincial Wuke University, Xijianda University, Beijing University of Science and Technology, Liaokeda, and Zhengzhou City refractory enterprises have Inexhaustible links and extensive technical cooperation have produced a large number of scientific and technological innovations in recent years. The equipment level has been significantly improved: Beijing Ruitai Technology, Beijing Tongda, Fuyang Yunai and other well-known domestic refractory enterprises and Zhengzhou enterprises have cooperated with each other to enhance the overall level of Zhengzhou refractory enterprises, and the main enterprise technology under its radiation belt action. The level of equipment has also been improved, and the kiln has been changed to natural gas or electricity for clean energy, and the level of automation has been significantly improved. Form a group of advantageous enterprises and distinctive enterprises: there are more than 30 enterprises with annual sales of more than 100 million yuan, more than 30 national high-tech enterprises, and a group of distinctive enterprises. Some of the new refractory materials produced by these enterprises are important functional materials for high-temperature industrial energy saving and longevity, and belong to the field of new materials technology.
At present, there are major problems in environmental protection: Some enterprises have subjectively considered that they have been reformed in accordance with the requirements of relevant departments such as environmental protection. All natural gas clean energy sources have reached the provincial and municipal air pollutant discharge standards, no need for desulfurization and denitrification treatment, and no additional flue gas desulfurization. Denitration device, etc. In other parts, the kiln with clean energy has not fully completed the energy saving in the whole process, such as strengthening the kiln insulation and increasing the waste heat utilization device. To this end, the Association recommends that enterprises should actively respond to the government's call, do a good job in pollution control, high-quality development, and seriously study the technical solutions for different kiln furnaces, different temperatures and different products to produce waste treatment to avoid detours. Technical solutions and materials, for high-temperature tunnel kiln, according to the recommendations of relevant experts at the meeting, first do low-nitrogen combustion reform, control parameters to reduce the cost of subsequent denitration.
Zhengzhou refractory materials not only support the safe operation of high-temperature industrial, but also solve the employment of local people and become a pillar industry for local economic development. The achievements have been the result of the government's correct guidance for many years and the result of several generations of efforts. At present, it is necessary to study the environmental protection comprehensive improvement and development of the refractory industry in Henan and Zhengzhou from the big pattern. It is suggested that the government can guide according to the classification of the varieties, according to the temperature. Introduce emission standards, eliminate backwardness, support the development of the industry, encourage enterprises to implement new environmentally friendly materials and feasible environmental protection technology solutions, and manage them from the roots so that enterprises can meet environmental protection requirements and make the industry develop healthily.