Metallurgical-industry thermal-insulation covering agent for high-temperature products
A thermal insulation covering agent and a technology in the metallurgical industry, applied in the metallurgical field, can solve the problems of restricting the development of the edible fungus industry, breeding mold and insect pests, polluting the environment, etc., achieving no dust pollution, not easy to absorb moisture, and good thermal insulation effect.
Inactive Publication Date: 2019-02-15
沈劲松
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AI Technical Summary
Problems solved by technology
The abandonment of fungus chaff not only wastes resources, but also breeds mold and insects, pollutes the environment, and restricts the development of my country's edible fungus industry
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment
[0013] A thermal insulation covering agent for metallurgical industry for high-temperature products, its raw materials include the following components by weight: 50-80 parts of fungus chaff, 10-30 parts of expansion agent, 5-20 parts of melting point regulator, 10-20 parts of silicon dioxide 12 parts, 20-30 parts of coke, 2-10 parts of limestone, 15-20 parts of aluminum powder, 10-12 parts of magnesium oxide, 20-30 parts of iron oxide, and some water.
[0014] Further, the expansion agent is selected from at least one of vermiculite, graphite, and perlite;
[0015] Further, the melting point regulator is selected from at least one of boiler ash, coal ash, plant ash
[0016] Compared with prior art, the beneficial effect of the present invention is:
[0017] The thermal insulation covering agent prepared by the invention has a bulk specific gravity of ≤0.55g / cm3 and a melting temperature of ≤1350°C. Used in smelting industries such as ironmaking and steelmaking, it has good ...
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Abstract
The invention discloses a metallurgical-industry thermal-insulation covering agent for high-temperature products. The raw materials of the thermal-insulation covering agent comprise the following parts of, by weight, 50-80 parts of mushroom bran, 10-30 parts of an expanding agent, 5-20 parts of a melting point regulator, 10-12 parts of silicon dioxide, 20-30 parts of coke, 2-10 parts of limestone,15-20 parts of aluminum powder, 10-12 parts of magnesium oxide, 20-30 parts of ferric oxide and some water. The bulk specific weight of the thermal-insulation covering agent prepared through the preparation method is smaller than or equal to 0.55 g / cm<3>, and the melting temperature is lower than or equal to 1,350 DEG C. The thermal-insulation covering agent is used for metallurgy industry such as iron-making and steel-making and is good in spreading property, good in heat preservation effect and free of dust pollution. Meanwhile, ladle sticking does not exist, no slag is formed, and moistureabsorption is not prone to occur. The thermal-insulation covering agent can stabilize high-temperature castings.
Description
technical field [0001] The invention relates to the field of metallurgy, in particular to a thermal insulation covering agent for metallurgical industry used for high-temperature products. Background technique [0002] In ironmaking and steelmaking production, heat preservation treatment must be carried out in each link of molten iron and molten steel to reduce heat loss and oxidation of molten iron and molten steel. The traditional thermal insulation agent is mainly carbonized rice husk as thermal insulation material. Carbonized rice husk is light in weight, small in particle size, and poor in spreadability. When in use, a large amount of it floats in the air under the drive of hot air flow, which seriously deteriorates the workshop environment. Although carbonized rice husk has a good heat preservation effect, its manufacturing process requires carbonization, the production cost is high, and the impact on the environment is also relatively large. Many scholars are devoti...
Claims
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IPC IPC(8): B22D1/00B22D11/111C21C7/00
CPCB22D1/00B22D11/111C21C7/00
Inventor 沈劲松
Owner 沈劲松