Method for producing attapulgite volcaniclastic rock light refractory aggregate

Abstract

The invention discloses a method for producing an attapulgite volcaniclastic rock light refractory aggregate. The technical scheme is characterized in that materials are subjected to uniformly stirring, smashing, soaking, extruding, calcination, smashing and screening, and then the materials are packaged to form a finished product of the attapulgite volcaniclastic rock light refractory aggregate. The attapulgite volcaniclastic rock light refractory aggregate is composed of highly viscous attapulgite clay powders, attapulgite clay tailings, volcaniclastic rock mixtures, diatom earth tailings, expanded vermiculites, coal gangues, bentonite tailings and plant straw powders. The attapulgite volcaniclastic rock light refractory aggregate has the advantages that the abrasion resistance is high, the gas hole ratio is high, the volume density is small, the volume contraction at the high temperature is small, and the heat conductivity is low. According to the method for producing the attapulgite volcaniclastic rock light refractory aggregate, a large number of various wastes are utilized in the materials of the attapulgite volcaniclastic rock light refractory aggregate, the resource utilization rate is increased, waste materials are changed into valuable things, the occupied land is reduced, the environment is protected and purified, the energy is saved, the production cost is lowered, the economic benefits are improved, and the attapulgite volcaniclastic rock light refractory aggregate is suitable for light fireproofing concrete constructions.

Description

technical field [0001] The invention relates to refractory materials, in particular to a production method of attapulgite pyroclastic rock lightweight refractory aggregate. 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. ...

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