Novel process for sand-making by adoption of forsterite
A forsterite and new process technology, applied in grain processing and other directions, can solve the problems of serious over-crushing, low crushing efficiency, poor equipment stability, etc., and achieve the effects of preventing over-crushing, improving yield and increasing processing capacity.
Inactive Publication Date: 2016-08-24
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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Problems solved by technology
This process adopts the extrusion force-based roller crusher to make sand. The existing problems include low crushing efficiency, difficulty in protecting useful mineral crystals, unreasonable particle size distribution, serious over-crushing, poor equipment stability, and high energy consumption.
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[0015] Such as figure 1 As shown, a new process for making forsterite sand comprises the following steps:
[0016] (1) After coarse crushing and medium crushing, the raw ore is screened in the first stage, the ore with a particle size > 6mm enters the crusher, and the ore with a particle size ≤ 6mm is screened in the second stage;
[0017] (2) The products of the crusher are screened in the second stage, the ore with a particle size > 1mm becomes the concentrate, and the ore with a particle size ≤ 1mm becomes the tailings.
[0018] The first-stage screening equipment in step (1) is a vibrating screen, and the second-stage screening equipment is a high-frequency fine screen.
[0019] The crushing machine in step (1) is a special crushing machine for forsterite sand making.
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Abstract
The invention discloses a novel process for sand-making by adoption of forsterite. The novel process comprises the following steps: conducting coarse crushing and intermediate crushing on raw ore, conducting first-stage screening on the crushed ore, feeding the ore with the granularity greater than 6 mm into a grinding machine, subjecting the ore with the granularity smaller than or equal to 6 mm to second-stage screening, and processing the ore with granularity greater than 1mm and smaller than 6 mm into concentrate. The novel process is simple in technological procedure, high in finished product ratio and fine in grain shape. The grinding machine dedicated to sand-making by adoption of forsterite has an enclosed ore grinding-screening self-circulation system, so that qualified products can be discharged in time, excessive crushing can be avoided, and the finished product ratio can be effectively improved.
Description
technical field [0001] The invention relates to a forsterite sand-making process, in particular to a special crushing and grinding machine-made sand making process using forsterite for sand production. The invention is applicable to various forsterite ores. Background technique [0002] Forsterite is a green and non-toxic casting material recognized by the world. It is an excellent molding material used in the production of steel castings in developed countries, especially manganese steel parts. It has the advantages of high temperature resistance, corrosion resistance, and good chemical stability. Its main Uses include foundry sand, additives for smelting cast iron, refractory materials and their products. The qualified particle size for processing forsterite refractories is 6~1mm, and -1mm cannot be processed and utilized. [0003] At present, my country's forsterite resource processing and utilization equipment is relatively backward, and the forsterite sand making proce...
Claims
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IPC IPC(8): B02C21/00B02C23/08
CPCB02C21/00B02C23/08
Inventor 张颖新马晓楠程晓峰
Owner ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD