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Production system and process for high-grade chromite lump ore

A technology of production system and production process, applied in the direction of solid separation, sieve, grid, etc., can solve the problems of high energy consumption, complex process, high labor intensity of workers, etc., achieve high sorting accuracy, improve recovery rate, improve The effect of resource utilization

Pending Publication Date: 2020-12-18
马钢集团设计研究院有限责任公司
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  • Claims
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Problems solved by technology

[0006] Aiming at the problems that the labor intensity of the workers existing in the above-mentioned ore dressing is relatively large, the process is complicated and the energy consumption is high, the present invention aims at processing chromite Cr 2 o 3 For raw chromite ore with a grade higher than 35%, a production system and process for high-grade chromite lump ore are designed, mainly based on the principle of dual-energy X-ray transmission separation technology, and XRT intelligent concentrator is used as the separation The main sorting equipment, according to the difference between the interaction between X-rays and the main elements of useful minerals and gangue ores in chromite ore, identifies chromite lumps and massive surrounding rocks and interlayers in ores, and improves ferrochrome Cr in nuggets 2 o 3 grade, reduce the content of surrounding rocks and interlayers in the ore

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  • Production system and process for high-grade chromite lump ore
  • Production system and process for high-grade chromite lump ore
  • Production system and process for high-grade chromite lump ore

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Embodiment 1

[0042] Aiming at the deficiencies of the above-mentioned mineral processing methods, the present embodiment provides a production system and a process thereof for high-grade chromite lump ore, such as Figure 1 to Figure 3 As shown, it includes a crushing mechanism 1, a screening mechanism 2 and a sorting mechanism 3 arranged in sequence according to the production process.

[0043] Crushing mechanism 1 includes raw ore bin 11, feeder 12 and jaw crusher 13, screening mechanism 2 includes vibrating screen 21, sorting mechanism 3 includes buffer ore bin 31, vibrating distributor 32, XRT intelligent concentrator 33, waste Stone bin 34, block concentrate bin 35 and powder concentrate bin 36. Among them, the feeder 12 is docked with the discharge port of the raw ore bin 11, and the discharge end of the feeder 12 is connected with the feed port of the jaw crusher 13. The feed size of the jaw crusher 13 is less than 330mm, and its tight edge is the smallest The ore discharge opening...

Embodiment 2

[0047] A kind of production system and technique thereof of high-grade chromite lump ore of the present embodiment, basic structure is the same as embodiment 1, difference and improvement are: as Figure 1 to Figure 3 Shown, the present embodiment adopts the production system of the high-grade chromite lump ore in embodiment 1, to Cr 2 o 3 The screening steps of raw chromite ore with a grade higher than 35% are as follows:

[0048] Step 1. Crushing: the chromite in the raw ore bin 11 is transported to the jaw crusher 13 via the feeder 12 for crushing;

[0049] Step 2, screening: the chromite crushed by the jaw crusher 13 is transported into the vibrating screen 21, the vibrating screen 21 adopts a single-layer vibrating screen, and the products under the screen are transported to the fine ore bin 36; the products on the screen are transported into the Sorting is carried out in the XRT intelligent concentrator 33;

[0050] Step 3, XRT intelligent sorting: the products on the...

Embodiment 3

[0065] Chromite ore Cr 2 o 3 The grade is 36.5%. It is mainly lump ore structure iron ore, followed by disseminated structure iron ore. Chromium element mainly occurs in Al-Fe-Magnesium chromite, and a small amount occurs in chromite and calcium chrome garnet. Gangue minerals are mainly forsterite, serpentine, chlorite and so on. The screening steps are as follows:

[0066] Step 1. Crushing: The maximum block size of the mined ore is 330mm, which is fed into the raw ore bin 11 by the car, and transported to the jaw crusher 3 via the feeder 2, and is crushed by a section of open circuit. The feeding of the jaw crusher 13 The size of the ore opening is 400×600, and the minimum tight-side ore opening is set to 35mm. The raw chromite ore is crushed, and the crushed products are fed into the vibrating screen 21;

[0067] Step 2, screening: the vibrating screen 21 adopts a single-layer vibrating screen, the mesh size of the screen is 10mm, and the product under the screen -10mm a...

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Abstract

The invention discloses a production system and process for high-grade chromite lump ore, and belongs to the technical field of ore beneficiation. The production system of the high-grade chromite lumpore comprises a crushing mechanism, a screening mechanism and a sorting mechanism which are sequentially arranged according to the production process sequence. The sorting mechanism comprises a vibrating material distributing device and an XRT intelligent concentrating machine. The vibrating material distributing device is arranged above the XRT intelligent concentrating machine and is used for uniformly conveying the ore screened by the screening mechanism to the vibrating material distributing device. According to the XRT intelligent concentrating machine, selected high-grade concentrate isconveyed to a lump concentrate bin, and tailings are conveyed to a barren rock bin; and undersize products are powder concentrate and are conveyed to a powder ore bin. The production system and process for the high-grade chromite lump ore are mainly based on the principle of a dual-energy X-ray transmission separation technology, XRT is used as main sorting equipment for separation, the content of surrounding rock and dunn bass in raw ore is reduced according to the difference of the interaction between X-rays and main elements of useful minerals in chromite ore and gangue ore, and the gradeof Cr2O3 in the chromite lump ore is improved.

Description

technical field [0001] The invention relates to the technical field of ore beneficiation, in particular to a production system of high-grade chromite lump ore and a process thereof. Background technique [0002] Chromite is an indispensable industrial raw material for metallurgy, refractory materials and chemical industries. Chromium has properties such as hardness, wear resistance, heat resistance, and corrosion resistance. Therefore, chromium-containing products are also widely used in national defense and civilian industries. [0003] High-grade chromite (Cr 2 o 3 content of more than 45%), sold directly as a product, due to underground mining, it is inevitable to mix about 15% of the surrounding rock (according to the different mining methods, the amount of waste rock mixed is also different, and the amount of waste rock mixed is generally 5~ 20%), leading to the dilution of the mined ore and reducing the mined grade. In addition, the mined raw ore also contains incl...

Claims

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Application Information

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IPC IPC(8): B02C1/02B02C23/14B07B1/28B07C5/34
CPCB02C1/02B02C23/14B07B1/28B07C5/34
Inventor 孙业长何丽萍耿希华金振科邓秀兰李保章李美鲜魏延涛周蕾
Owner 马钢集团设计研究院有限责任公司
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