A natural grading and balanced distribution method and device for wide particle size bulk materials

Abstract

The invention provides a natural grading and balanced material distribution method and device for bulk materials wide in grain size distribution and belongs to the technical field of industrial energy saving. According to the method, the height difference of a slope and sieve holes which are of different hole diameters and formed in a steepest glide hook face are utilized, and grains in the bulk materials can be graded naturally under the effect of gravity; and by means of the steepest glide hook face of the slope and nonuniform distribution of the sieve holes in the hook face, so that balanced falling of the bulk materials in space time is achieved. The sieve holes in the steepest glide hook face can be classified into multigrade sieve holes according to the sizes of the sieve holes and used for separating the mixed bulk materials wide in grain size distribution. The distribution density, on the hook face, of the sieve holes is decreased as the hole diameter is increased. The steepest glide hook face is in a ridge shape and formed by an inward-sunken prompt drop curve through three-dimensional extension. The natural grading and balanced material distribution device is simple and easy to operate; the treatment capacity of the bulk materials is high; the device is applicable to the working condition in which the grain size of the bulk materials generated through clinker calcination and the like is wide in variation range; and the problem that efficient direct waste heat recovery cannot be conducted on the mixed bulk materials easily is solved.

Description

technical field [0001] The invention relates to the technical field of industrial energy saving, in particular to a method and device for natural grading and balanced distribution of bulk materials with wide particle diameters. Background technique [0002] my country's metallurgy, building materials and other industries produce more than 4.5 billion tons of high-temperature bulk materials every year, and the residual heat exceeds 100 million tons of standard coal. CDQ, chain-return-loop and other technologies for bulk materials have matured, and technologies such as multi-stage cyclone, spouted bed, and drum cooler for powdery materials have also been widely used, but for a large number of processes in the process industry Calcined raw materials, industrial slag, and other solid bulk materials that contain both lumps and powders have a wide particle size coverage, a large yield and temperature change span, and waste heat recovery is difficult, inefficient, and immature tech...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem that the mixture of powder and block in high temperature bulk material in the process industry is not easy to directly recover waste heat, etc., and provides a method and device for natural grading and balanced distribution of wide particle size bulk material

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