Silicon carbide ramming mass adopting waste silicon carbide sagger as main raw material

Abstract

The invention discloses a silicon carbide ramming mass applicable to filling gaps between a cross gap and a vertical gap of a blast furnace copper cooling stave, at groove parts, and between insert bricks of the cooling stave, and belongs to the technical field of unshaped refractories. By adopting a waste silicon carbide sagger as a main raw material, the silicon carbide ramming mass is preparedfrom the components in percentage by mass: 50 to 65 percent of waste silicon carbide sagger granules, 18 to 25 percent of waste silicon carbide sagger powder, 2 to 5 percent of silica powder, 1 to 6 percent of natural graphite, 1 to 3 percent of green clay, 1 to 2 percent of curing agent, and 6 to 9 percent of modified water glass. The silicon carbide ramming mass is prepared by adopting the wastesilicon carbide sagger material as the main raw material, has the advantages of ambient curing, high strength after curing, high compactness, excellent thermal conductivity and the like, can realizerecycling of the waste silicon carbide sagger, and has important economic and environmental benefits since the involved raw materials are low in price and stable in source and quality.

Description

technical field [0001] The invention belongs to the field of unshaped refractory materials, and in particular relates to a silicon carbide ramming material with waste silicon carbide saggers as the main raw material. Background technique [0002] Copper staves are generally used as cooling equipment for blast furnace body, bosh and furnace waist, and the high thermal conductivity of copper is used to take away the heat in the furnace in time through cooling water. The horizontal and vertical gaps between the copper staves and the gaps between the stave bricks are filled with high thermal conductivity materials. The joint action of the stave and the high thermal conductivity filler reduces the temperature of the stave body, which is more conducive to the formation of slag skin to protect the interior. The lining material and stave, and the packing with good density can effectively block the leakage of gas in the blast furnace, protect the furnace shell and prolong the service...

AI Technical Summary

Problems solved by technology

Therefore, enterprises need to buy land to discard or bury these increasing waste materials, which increases production costs and also causes a great waste of resources and serious environmental pollution.

Since the types of silicon carbide, silicon carbide content, and porosity used in waste saggars from different sources are quite different, the quality of the waste is also different, and most silicon carbide product companies have high quality requirements for silicon carbide, and basically will not Waste materials are reused, so the recycling rate of waste materials is low