Cold-pressed high-strength fluorite pellet binder and use method thereof

Abstract

The invention relates to a cold-pressed high-strength fluorite pellet binder and a use method thereof. The cold-pressed high-strength fluorite pellet binder comprises the following components by mass percentage: 50 to 85% of sodium metasilicate pentahydrate, 10 to 45% of water glass and 0.1 to 5% of polyacrylamide. When in use, dried fluorite powder with the moisture content mass percentage of 4 to 5 percent is sent to a stone mill mixer, the sodium metasilicate pentahydrate is firstly added to be stirred for 3 to 10 minutes, and then the water glass and the polyacrylamide are sequentially added to be stirred for 3 to 10 minutes each, and then are stirred together for 5 to 30 minutes to be fully mixed; and a mixture is sent to cold-press forming machine to be pressed into a ball, and then is sent to a drying furnace at a temperature of 150 to 170 DEG C for 20 to 30 minutes; and the water content is reduced to below 1%, and then the obtained product is bagged after being cooled. The prepared fluorite ball has the advantages that the strength is good, the compressive strength is increased by 30 to 140%, and the cost is reduced by more than 60%.

Description

technical field [0001] The invention relates to a cold-pressed high-strength fluorite pellet binder and its application method. The binder can bind high-purity fluorite powder and cold-press it into high-strength fluorite pellets, which is to replace high-grade fluorite blocks with fluorite powder the key material. Background technique [0002] Metallurgy and steelmaking are inseparable from fluorspar, and currently there is no other material that can replace fluorspar. In the iron and steel industry, fluorite is widely used as a flux for chemical iron, ironmaking, and steelmaking. The functions of fluorite are: firstly, to reduce the smelting temperature and save fuel consumption; secondly, to reduce the viscosity of slag and increase the fluidity of slag so that Smooth slag removal from metal. For every ton of iron smelted, 6-9 kg of fluorite is needed, and for each ton of steel produced, 2-9 kg of fluorite is needed. In addition to lowering the melting point of refract...

AI Technical Summary

Problems solved by technology

Generally speaking, organic binders have good bonding performance and high mechanical strength, but their thermal strength and thermal stability are poor, and some have poor water resistance; inorganic binders have a wide range of sources, low cost, and good thermal strength and thermal stability. but increasing the ash

At present, the cost of binder in the production of fluorite balls is about 200 yuan / t higher, and the quality of fluorite balls is not ideal, and the compressive strength or mechanical strength is not enough

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