CN-224221422-U - System for improving iron recovery by extracting mica production machine-made sand from iron tailings

CN224221422UCN 224221422 UCN224221422 UCN 224221422UCN-224221422-U

Abstract

The utility model discloses a system for improving iron recovery by extracting mica production machine-made sand from iron tailings, which comprises a high-pressure roller mill, a wet screening machine, a coarse grain tailing-throwing magnetic separator, a first cyclone and a super pulse machine which are sequentially connected, wherein the super pulse machine is respectively connected with a second cyclone and a third weak magnetic separator, the second cyclone is connected with a high-frequency dewatering screen, the third weak magnetic separator is connected with the second high-frequency dewatering screen, and the utility model has the advantages that the effective components of tailings I such as mica can be recovered.

Inventors

ZHOU HONGQIANG
ZHAO WEI
FENG WEI
E JITAO
WU YANG
JIN YUEDONG
ZHANG HAO
WANG TAIWEI
Zhao xiwang

Assignees

辽宁首钢硼铁有限责任公司

Dates

Publication Date: 20260512
Application Date: 20240812

Claims (2)

1. The system is characterized by comprising a high-pressure roller mill, a wet screening machine, a coarse grain tailing-throwing magnetic separator, a first cyclone and a super-pulse machine which are sequentially connected, wherein the super-pulse machine is respectively connected with a second cyclone and a third weak magnetic separator; The device also comprises a first closed-circuit ore grinding machine, a first weak magnetic separator, a second closed-circuit ore grinding machine, a second weak magnetic separator and a filter which are connected in series with the coarse grain tail-throwing magnetic separator.
2. The system for improving iron recovery by using the mica production machine to extract iron tailings according to claim 1, wherein the high-frequency dewatering sieves are all linear sieves.

Description

System for improving iron recovery by extracting mica production machine-made sand from iron tailings Technical Field The utility model relates to the technical field of mines, in particular to a tailing extraction system. Background In the collecting and refining technology of paigeite, ore is firstly rolled and crushed by a high-pressure roller mill, discharged materials of the high-pressure roller mill are mixed with water to form ore pulp, the ore pulp is screened by a wet screening machine, coarse particles on the screen are mixed with raw materials and are conveyed to the high-pressure roller mill again for rolling, the screened ore pulp is subjected to coarse particle tailing-discarding magnetic separation, gangue minerals containing surrounding rocks are discarded as tailings I, and the tailings I are used as a byproduct and are generally only used as building materials or discarded. This inevitably wastes the useful components of the tailings I, such as mica and the like. Disclosure of utility model The utility model aims to solve the technical problems and provide a system for improving iron recovery by extracting mica production machine-made sand from iron tailings, which comprises a high-pressure roller mill, a wet screening machine, a coarse grain tailing-throwing magnetic separator, a first cyclone and a super pulse machine which are sequentially connected, wherein the super pulse machine is respectively connected with a second cyclone and a third weak magnetic separator; The tailings are mixed with water after being rolled by a high-pressure roller mill, and enter a wet sieving machine, coarse particles on the wet sieving machine are mixed with raw materials and are conveyed to the high-pressure roller mill again for rolling, and the screened ore pulp enters a coarse grain tailing-discarding magnetic separator; The overflow of the super pulse machine is subjected to desliming and classification through a second cyclone, the settled sand pulp is subjected to a first high-frequency dewatering screen to obtain an oversize product mica, and the undersize material enters a gravity tailing system. Furthermore, the utility model is effectively combined with the preparation system of ferroboron fine powder, and further comprises a closed-circuit ore grinding machine I, a low-intensity magnetic separator I, a closed-circuit ore grinding machine II, a low-intensity magnetic separator II and a filter which are connected in series with the coarse grain tail-throwing magnetic separator; The minerals left by the coarse grain tailing-throwing magnetic separator are used as magnetic concentrate I, primary grinding is carried out by a closed-circuit grinding machine, and the granularity of an output product is controlled to be 50-55% of the granularity of 74 mu m; The product is subjected to a first weak magnetic separator to obtain a magnetic concentrate II and tailings II, wherein the magnetic concentrate II enters a second closed circuit grinding machine, and the granularity of the output product is controlled to be-74 mu m, and the content of the output product is controlled to be 90%; and (3) carrying out secondary concentration on the product obtained in the last step through a magnetic weakening machine to obtain magnetic concentrate III and tailings III, wherein the magnetic concentrate III is subjected to a filter to produce fine boron-containing iron powder. And (3) the tailings IV pass through a high-frequency dewatering screen II to obtain machine-made sand of an oversize product, and the undersize material is recycled by a fine sand reselection process to obtain uranium concentrate. The high-frequency dewatering screen is a straight line screen. And (3) recycling the tailings III into a fine mud re-separation process to obtain uranium concentrate. The utility model has the advantages that the effective components of the tailings I, such as mica, can be recovered, and the recovery rate of iron is improved because the tailings IV have higher content of iron. Drawings FIG. 1 is a schematic diagram of a device connection of the present utility model; FIG. 2 is a schematic diagram of the present utility model; In the figure, 1 is a high-pressure roller mill, 2 is a wet sieving machine, 3 is a coarse grain tailing-throwing magnetic separator, 4 is a closed-circuit ore mill I, 5 is a weak magnetic separator I, 6 is a closed-circuit ore mill II, 7 is a weak magnetic separator II, 8 is a filter, 9 is a cyclone I, 10 is a super-pulse machine, 11 is a cyclone II, 12 is a weak magnetic separator III, 13 is a high-frequency dewatering screen I, 14 is a high-frequency dewatering screen II, and 15 is a gravity tailing system. Detailed Description The utility model is specifically described below with reference to the accompanying drawings, and as shown in the drawings, the utility model comprises a high-pressure roller mill 1, a wet screening machine 2, a coarse grain tailing-throwing magnetic separator 3, a fi