Light refractory attapulgite volcaniclastic-rock aggregate sand

Abstract

The invention discloses light refractory attapulgite volcaniclastic-rock aggregate sand. The light refractory attapulgite volcaniclastic-rock aggregate sand in the technical scheme is mainly characterized by comprising highly-viscous attapulgite clay powder, attapulgite clay tailings, volcaniclastic rock mixture, diatomite tailings, expanded vermiculite, coal gangue, bentonite tailings and plant straw powder. A finished product of the light refractory attapulgite volcaniclastic-rock aggregate sand is obtained by uniformly stirring the ingredients, crushing, soaking, extruding, roasting, crushing, screening and packaging. The light refractory attapulgite volcaniclastic-rock aggregate sand has the advantages of high porosity, low volume density, small volume shrinkage at the high temperature and low thermal conductivity. The light refractory attapulgite volcaniclastic-rock aggregate sand 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 production cost is lowered. The light refractory attapulgite volcaniclastic-rock aggregate sand is applicable to light refractory concrete engineering.

Description

technical field [0001] The invention relates to a refractory material, in particular to an attapulgite pyroclastic lightweight refractory aggregate sand. Background technique [0002] Lightweight refractory material is a kind of refractory material with high porosity, small bulk density and low thermal conductivity. It is used as heat insulation material in industrial furnaces and other thermal equipment; Poor slag erosion, mechanical strength and wear resistance, large volume shrinkage at high temperature. [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 additio...

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 attapulgite clay deposits The thickness of the pyroclastic rock layer in the upper layer of the mining area is as high as tens of meters. During the mining process of the attapulgite clay, the pyroclastic rock in the upper layer of the attapulgite clay mining area is discarded as waste. According to field investigations, every ton of attapulgite clay mining Rodstone clay produces more than 30 tons of pyroclastic rocks. Calculated at an annual output of 150,000 tons, the pyroclastic rocks produced are as high as 4.5 million tons. They have not been utilized for many years, and the entire mining area is re-accumulated everywhere. Pyroclastic rock mixture, causing serious waste of resources and economic losses