[China Aluminum Industry Network] Application Scope 1. The production line adopts the American BW Domestic Complete Reproducing Line. The technology is mature and reliable, and the performance is advanced. The product quality reaches the level of similar products in the United States and is advanced in the country. It is suitable for large-scale production of vermiculite from coal mines during mining and digestion and treatment of coal gangue.
2. The product is suitable for fire insulation of aviation, aerospace, marine, electronics, petroleum, chemical, electric power, light industry, textile, industrial kilns and other thermal equipment. It can also be used directly in high temperature facilities such as industrial furnaces where coal, gas, electricity, natural gas, and other gas are used for combustion.
The main technical content First, the basic principle The use of coal gangue as a raw material for production, resistance furnace continuous melting continuous blowing technology, production of silica refractory fiber materials. With advanced technology and mature technology, the entire production process can be divided into six sections: batching, resistance furnace melting, fiber injection, acupuncture blanket, heat treatment, automatic vertical and horizontal cutting and packaging. It is an automated process for continuous production operations. .
The coal gangue entering the factory is decarbonized and broken, and the necessary auxiliary materials are mixed according to different products. The prepared raw materials are sent to the resistance furnace for melting, and then the compressed raw material stream is blown with compressed air to rapidly tear and quench. Solidified into refractory fiber. The formed fiber is formed into a needle-punched blanket material by automatic cloth cotton and needle punching into a blanket process, and is vertically and horizontally cut into products according to the required specification and size, and the edge material is then wet-processed, stirred, formed, dried into a finished product, and inspected and packaged. Storage. The entire production process is free from waste, waste water and exhaust gas.
Second, the technical key to control a reasonable proportion of ingredients and melt viscosity, aluminum silicate mineral melt viscosity and its composition is directly related to the ratio of silica and aluminum oxide and alkali metal, alkaline earth metal oxides, three The content of iron oxide has a great influence. The production of aluminosilicate refractory fibres from coal gangue and the production of fibres from domestic use of coke stones is mainly different from the difference in the pretreatment process due to the use of different raw materials. In the world, for the first time, aluminosilicate refractory fibres were produced using coal gangue as raw materials. Technology, its products fill the gaps in the country.
A typical scale of two automated production lines with an annual output of 1000 tons of acupuncture blankets, a wet production line with an annual output of 300 tons of special-shaped products.
The main technical indicators and conditions First, technical indicators 1. Coal gangue utilization rate 100%
2. Density (kg/m3) 60-160
3. Heating line change (1150°C*6h) ≤3.5%
4. Change of heat conduction line (w/mh) 1050-1300°C≤0.16-0.177
5. Physical and chemical indicators of aluminum oxide ≥ 45% -47%, silica + aluminum oxide ≥ 98%, iron oxide ≤ 1.2%
Second, the conditions require an area of ​​20,000 square meters, dedicated line power supply, the total annual power consumption of 5.5 million degrees, the total annual water consumption of 1,500 tons, the production of recycled water consumption of 20 tons / hour.
Major equipment and operation management 1. The main equipment of high and low voltage distribution and transformation systems, one set of main payment control system, one set of drying kiln, five eyes, and operation management. The production operation has a high degree of automation. The entire production process carefully observes the operating conditions and timely adjusts the process operation buttons.
2. The production equipment is easy to maintain and all kinds of accessories can be solved in the nearest place, facilitating the maintenance of the production line.
3. Various main and auxiliary materials are common materials for industrial use and can be purchased anywhere.
4. The operating tools are prepared for the high school education level. After three months of training, the operation can be performed (24 shifts for three shifts).
Investment Benefit Analysis I. Investment of the Project Total investment is 12.18 million yuan Among them, the equipment investment is 6.15 million yuan The main equipment life is 12 years. The operating cost is 3.78 million yuan/year. 2. The economic benefit analysis The total investment internal rate of return is 34.59%; The investment profit rate is 35.2% The investment profit and tax rate is 54.2%. This project is a profit and waste project. According to the relevant regulations, income tax is exempted within three years, and there are also preferential regulations for value-added tax. Only these two items can generate considerable profits in the initial stage of production.
III. Analysis of Environmental Benefits According to the typical scale of production, 1600 tons of coal gangue can be digested each year, reducing the area of ​​meteorite to 2.1 acres per year, reducing the environmental burden and protecting the ecological environment.
Promotion and User Comments I. Promotion The results of this project have been put into production by Datong Special Refractory Co., Ltd. The products were praised by users during trial production trials and are now sold in North China, Northeast China, Northwest China, South China, and East China. More than 130 large and medium-sized enterprises in Taiwan and abroad are sold abroad in 12 countries including the United States, Japan, South Korea, Ireland, Saudi Arabia, Iran, and Thailand.
Second, the user's opinion The aluminum silicate refractory fiber products produced by Datong Special Refractory Co., Ltd., an eastern energy-saving company, have good color, low content of slag balls, and the same size and dimensions. The procedures for product quality inspection are complete and the price is reasonable. We have been unanimously approved by our company's three production plants. Their after-sales service has also been done, urging users to worry, thinking about what users think, not afraid of trouble, good service attitude. Their products can indeed be called quality products.
2. Jinguang Company When our company replaced the 6000KVA mine lining in 1998, it used aluminosilicate refractory fiber material produced by Datong Refractory Co., Ltd. and achieved good results:
(1) High product quality, long service life, various technical indicators in line with national quality standards;
(2) The product is used on a submerged arc furnace, which has the advantages of good thermal insulation performance, good insulation performance, convenient construction and the like, and fully meets the technical requirements for use;
(3) The company has a good after-sales service in promoting the new refractory material, aluminosilicate refractory fiber.
Major Users Directory Domestic Users: More than 130 such as Shougang, Taigang, Suzhou New Changguang Co., Ltd., Shaanxi Industrial Furnace Research & Design Institute, Foshan Ceramics Group Corporation, Tangshan Dongfang Energy Conservation Company, Jinguang Company, Huaxia Kiln Company, and Taiwan.
Foreign users: United States, Japan, Korea, Ireland, Iran, Iraq, Egypt, Thailand and other countries.
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Kaiping Jenor Sanitary Ware Co., Ltd , https://www.kpjenorsanitary.com