Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Magnetite High Pressure Roller Mill Wet Pre-Separation-Stage Grinding-Fine Screen Tower Mill Magnetic Separation Process

A high-pressure roller grinding and stage grinding technology, applied in the wet field of magnetite high-pressure roller grinding, can solve the problems of many crushing sections, unstable process, and large number of sorting sections, so as to simplify the process flow, reduce the cost of mineral processing, and improve the The effect of grinding fineness

Active Publication Date: 2020-08-21
ANSTEEL GRP MINING CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Magnetite adopts the process of "three-stage one closed-circuit crushing, stage grinding-fine sieve regrinding-single magnetic separation process". There are three stages of crushing in the crushing process, one stage of screening, and three stages of grinding in the separation process , two-stage fine screening operation, and nine-stage magnetic separation operation, there are obviously the following problems and deficiencies: 1) There are many crushing stages and sorting stages, and the process is complicated and lengthy; 2) The production operation control and management are inconvenient, especially in the sorting process A large amount of the second-stage fine sieve is returned to the re-mill for re-grinding, which may easily cause process instability and index fluctuations, which will affect normal production; 3) Disadvantages such as high beneficiation costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Magnetite High Pressure Roller Mill Wet Pre-Separation-Stage Grinding-Fine Screen Tower Mill Magnetic Separation Process
  • Magnetite High Pressure Roller Mill Wet Pre-Separation-Stage Grinding-Fine Screen Tower Mill Magnetic Separation Process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 2 Shown: a kind of magnetite high-pressure roller mill wet type pre-selection-stage grinding-fine screen tower mill magnetic separation process of the present invention comprises rough breaking operation and medium breaking operation, is characterized in that also comprising the following steps:

[0039] 1) The secondary crushing product with a grade of 31.5% and a particle size of 25mm-0 mm is fed into a closed-circuit high-pressure roller mill-screening operation composed of a high-pressure roller mill and a screening device to obtain a high-pressure crushing product with a particle size of 3mm-0 mm. Roller mill-screening products, the high pressure roller mill model is GLGY-06025H roller mill;

[0040] 2) Feed the high-pressure roller mill-screened product into the wet pre-separation magnetic separator to obtain the wet pre-separation magnetic separator concentrate with a grade of 36.5% and the wet pre-magnetic separator tailings with a grade of 7.95%...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a magnetite high compression rolling wet pre-concentration-stage grinding-fine screen tower rolling magnetic separation process. The process comprises coarse breaking and mildbreaking, and is characterized by further comprising the following steps that ores with the grade being 30%-32% and the granularity being -25mm are subjected to closed circuit high compression rolling; rolling products are subjected to beforehand magnetic separation; premagnetization concentrates are subjected to first-stage closed-circuit grinding; primary overflow is subjected to first-stage magnetic separation; first-stage magnetic separation concentrates are subjected to second-stage closed-circuit grinding; secondary overflow is subjected to second-stage magnetic separation and fine screening; screen residues are subjected to third-stage closed-circuit tower milling and grinding; third-time graded overflow products are graded by a third-stage magnetic separator; concentrates of the third-stage magnetic separator and screen underflow products are subjected to fine magnetic separation to obtain 67%-67.5% final concentrates; and tailings of all stages of magnetic separation work arecombined to be combined tailings. The magnetite high compression rolling wet pre-concentration-stage grinding-fine screen tower rolling magnetic separation process has the advantages that (1) high compression rolling pre-concentration is conducted, so that the particle size of grinding feed is reduced, and the grade of crude ores and grinding fineness are improved; (2) a cyclone and a tower millare combined, so that one stage of fine screening and multiple stages of magnetic separation operation are omitted; (3) the flow is simplified, and the ore mineral separation cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of beneficiation, and in particular relates to a magnetite high-pressure roller grinding wetting machine with simplified technological process. [0002] Formula pre-selection-stage grinding-fine screen tower mill magnetic separation process. Background technique [0003] In the mineral processing industry, the processing of magnetite ore usually adopts the process of "coarse crushing, medium crushing, fine crushing and screening, stage grinding-fine screen regrinding-single magnetic separation". The specific process is usually as follows: After the raw ore (1000-0mm) undergoes coarse crushing, medium crushing and fine crushing and screening, the particle size of the crushed product reaches 12-0 mm, and the medium and fine crushing and screening operations account for 25% of the beneficiation cost Or so, the cost is high, after the 12-0 mm crushed product passes through the closed-circuit grinding consisting...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B03B9/00B03B1/00
CPCB03B1/00B03B7/00B03B9/00
Inventor 张丛香刘双安梅灿国钟刚唐昊修德江
Owner ANSTEEL GRP MINING CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products