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Large scale ore pulverizing method

A crushing method and large-scale technology, applied in the direction of grain processing, etc., can solve the problems that the crusher and the ore feeding equipment cannot work continuously, the production efficiency of the crushing system is low, and it is difficult to meet the crushing production, so as to avoid the failure of the crusher, The effect of high crushing production efficiency and less personnel

Inactive Publication Date: 2008-06-11
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the current domestic and foreign crushing equipment and its supporting ore feeding equipment (mostly electric rake ore winches) are relatively primitive and backward, the crushing working time is prolonged, the crushed product has a large particle size, and the crushing machine and the ore feeding equipment cannot work continuously. Crusher accidents occurred due to fluctuations in ore feed, resulting in low production efficiency of the entire smashing and crushing system, and high labor intensity for workers, making it difficult to meet the needs of crushing production
At present, large and medium-sized concentrators both at home and abroad adopt this crushing method, and there are no literature reports on other advanced crushing methods.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Broken minerals are high-nickel matte ingots. High-nickel matte ingots are intermediate products in the nickel smelting process. The dimensions of the ingots are (unit: meter) 3.0×2.5×1.0, and the weight of a single ingot is about 25 tons. , Vickers hardness Hv: 239.63~242.75kg / mm 2 , Mohs hardness: 4.23, density: 5.66kg / dm 3 , Specific magnetic susceptibility: 43.96 (1×10 -6 cm 3 / g), it can be expanded to crush other similar smelting ingots or natural ores, and the size of the crushed ingots is 1 to 5 meters.

[0011] The crushing industrial equipment uses a 32-ton bridge crane, PC220-7 hydraulic rock crusher and a PEF600×900 jaw crusher, equipped with a steel grid screen with a mesh size of 350×350 and a steel feeding chute.

[0012] When crushing, 25 tons of high-nickel matte ingots are first hoisted by a 32-ton bridge crane to the steel grid screen in the crushing yard, and the target minerals are directly impacted by the PC220-7 hydraulic rock crusher hammer (d...

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PUM

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Abstract

The invention discloses a method for breaking ores with large scales, and relates to the method for breaking over-sized ores whose diameters are over one meter. The invention is characterized in that the breaking procedure comprises hoisting broken target ores to a steel grid sieve, using a breaking hammer of a hydrostatic stone-breaker to directly attack the breaking target ores, and feeding standard ores which pass through holes of the steel grid sieve after breaking to the stone-breaker through an ore slider for breaking. The method of the invention enables the hydrostatic stone-breaker to break continuously, breaking productive efficiency is high, breaking grain size is less than 350mm, the technique operation is simple, the needed operational staffs are few, and the service life of the equipment is long.

Description

technical field [0001] The invention discloses a method for crushing large-sized ore, which relates to a method for crushing super-large-sized ore with a diameter greater than 1 meter. Background technique [0002] In the process of beneficiation and crushing equipment, for ore with a diameter greater than 1 meter (ultra-large size ore), the crushing method is usually first crushed by a crusher to the size range of the ore that the crushing equipment can crush, and then the ore is sent to the ore through the ore feeding equipment. into the crushing equipment for crushing. [0003] The working principle of the crusher is to use the poplar system to raise the crushing hammer to a certain height, and crush the ore through the free fall of the hammer. Due to the current domestic and foreign crushing equipment and its supporting ore feeding equipment (mostly electric rake ore winches) are relatively primitive and backward, the crushing working time is prolonged, the crushed prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C1/00B02C23/16
Inventor 班允涛王国荣郑建强曹锴
Owner JINCHUAN GROUP LIMITED
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