High-alumina refractory attapulgite volcaniclastic-rock brick

Abstract

The invention discloses a high-alumina refractory attapulgite volcaniclastic-rock brick. The high-alumina refractory attapulgite volcaniclastic-rock brick in the technical scheme is mainly characterized by comprising highly-viscous attapulgite clay powder, attapulgite clay tailing powder, volcaniclastic rock mixture, high-alumina bauxite, kaolin, coal gangue and bentonite tailings. A finished product of the high-alumina refractory attapulgite volcaniclastic-rock brick is obtained by stirring, pressing, airing, roasting and cooling the ingredients and packaging. The high-alumina refractory attapulgite volcaniclastic-rock brick has the advantages of small high-temperature creep, high erosion resistance and good thermal shock resistance. The high-alumina refractory attapulgite volcaniclastic-rock brick is made of a great quantity of various wastes, so that resource utilization rate is increased beneficially, the wastes turn into wealth, land occupation can be reduced, environmental protection and purification are achieved, energy is saved, and economic benefit is improved. The high-alumina refractory attapulgite volcaniclastic-rock brick is applicable to construction of linings of shaft furnaces, hot-blast heaters, furnace tops of electric furnaces, blast furnaces, reverberating furnaces and rotary kilns.

Description

technical field [0001] The invention relates to a refractory material, in particular to an attapulgite pyroclastic rock high-alumina refractory brick. Background technique [0002] There are many kinds of raw materials for refractory bricks, and the composition is mainly divided into six categories: soil, stone, sand, ore, powder and other materials. The alumina in the finished high-alumina refractory brick is ≥ 48%. [0003] 80% of my country's mineral resources are associated mines, a large amount of valuable resources are stored in tailings, and tailings stockpiles require a large amount of land. Many tailings ponds have been used beyond the time limit or overloaded, or even operated in violation of regulations, which has caused great safety hazards in the tailings ponds and posed a serious threat to the property and life safety of people in surrounding areas. [0004] In addition to attapulgite, attapulgite clay often contains minerals such as bentonite, kaolinite, hydr...

AI Technical Summary

Problems solved by technology

[0005] Pyroclastic rocks coexist with attapulgite clay deposits, and pyroclastic rocks are mostly in the upper layer of attapulgite clay deposits, and some pyroclastic rock deposits in the upper layer of attapulgite clay deposits of The thickness is as high as tens of meters. During the mining process of attapulgite clay, the pyroclastic rock in the upper layer of the attapulgite clay mining area is discarded as waste. There are more than 30 tons of pyroclastic rocks. Calculated according to the annual output of 150,000 tons, the pyroclastic rocks produced are as high as 4.5 million tons, which have not been utilized for many years. The entire mining area is full of re-accumulated pyroclastic rock mixtures, causing severe resource waste and economic loss