Special accessory balls for grinding of natural scoria

Abstract

The invention discloses special accessory balls for grinding of natural scoria. The special accessory balls for grinding are applied to a two-bin grinding machine. The steel balls contained in one bininclude, by weight percentage, 87-97% of the irregular-shaped steel balls with the diameter of 100 mm, and 3-13% of the steel balls with the diameter of 30 mm. The steel balls contained in the otherbin include, by weight percentage,10-30% of the steel balls with the diameter of 50 mm, 35-55% of the steel balls with the diameter of 40 mm, and 20-35% of the steel balls with the diameter of 30 mm.The irregular-shaped steel balls are composed of common steel balls and protrusions attached on the common steel balls. Through the reasonable steel ball proportion and irregular-shaped steel ball structure, low-energy grinding of natural scoria is realized, and ground natural scoria powder has the effect of good quality.

Description

technical field [0001] The invention belongs to the technical field of natural volcanic slag grinding, and in particular relates to a special matching ball for natural volcanic slag grinding. Background technique [0002] For high-performance concrete, it is generally mature at home and abroad to add fly ash, slag powder and silica fume and other active mineral admixtures from industrial waste residues to the concrete, so as to improve workability and delay the heat release of hydration speed, reduce concrete cracking, improve durability, and reduce costs. However, in places where these traditional mineral admixtures are lacking, the application of natural pozzolan is more common, and natural pozzolan is a type with better performance in natural pozzolan, but natural pozzolan is hard and difficult to grind. The most commonly used grinding equipment is the ball mill. The ball mill is composed of a horizontal cylinder, a hollow shaft for feeding and discharging materials, an...

AI Technical Summary

Problems solved by technology

However, in places where these traditional mineral admixtures are lacking, the application of natural pozzolan is more common, and natural pozzolan is a type with better performance in natural pozzolan, but natural pozzolan is hard and difficult to grind. The most widely used grinding equipment is ball mill

The ball mill is composed of a horizontal cylinder, a hollow shaft for feeding and discharging materials, and a grinding head. The cylinder is a long cylinder, and the cylinder is equipped with grinding bodies (such as steel balls, steel segments, etc.). The liner is fixed to the cylinder, and the grinding body is generally steel balls, which are loaded into the cylinder according to different diameters and certain proportions. However, the steel balls and the proportion of steel balls on the market are determined according to the grinding and processing of cement clinker. Yes, the grinding effect of natural volcanic slag with high hardness is poor

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