A kind of processing technology of iron ore waste soil stone

A processing technology and soil and stone technology, which is applied to the processing technology field of iron ore waste soil and stone, can solve the problems of dust pollution, poor sorting effect and high iron content of stone materials, and achieve the effect of taking into account the recycling and improving the shaping degree.

Active Publication Date: 2022-04-19
李宝国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the "dry crushing --- magnetic separation" process, often because the iron ore in the waste soil is a weak magnetic mineral, the separation effect is very poor, and there is a problem of serious dust pollution; for the "wet crushing --- jump Because the main purpose of this process is to select iron ore with a degree of 52 degrees, it is easy to cause high iron content in the stones produced by jigging, which cannot be used as high-standard building materials, and the treatment of tailings is poor in environmental protection.

Method used

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  • A kind of processing technology of iron ore waste soil stone
  • A kind of processing technology of iron ore waste soil stone
  • A kind of processing technology of iron ore waste soil stone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1-a kind of processing technology of iron ore waste soil stone, as figure 1 shown, including the following steps:

[0042] Step 1: After the waste soil and rocks in the dump are subjected to coarse crushing, medium crushing, and wet screening in sequence, agglomerates with a particle size of 10-45mm, stone powder with a particle size of 0-10mm and tail water are obtained;

[0043] Step 2: The 10-45mm block material in step 1 is subjected to a comprehensive jigging treatment by a multi-stage jig machine to obtain 10% standard ore, 15% medium ore, and 75% no ore material;

[0044] Step 3: Shaping and vibrating the ore-free material obtained in step 2 to obtain shaped stones of 10-30mm and stone powder of 0-10mm; the porosity of the shaped stones is 40±2% , the specific gravity of the pile is less than 1.6 tons / m 3 ;

[0045] Step 4: Mix the medium ore obtained in step 2 with the 0-10mm stone powder in steps 1 and 3, and then dissociate twice through an impac...

Embodiment 2

[0051] Embodiment 2-a kind of processing technology of iron ore waste soil stone, as figure 2 shown, including the following steps:

[0052] Step 1: Pass the waste soil and stones from the dump site through the jaw crusher and the cone crusher for two-stage circular crushing, and then perform wet screening treatment to obtain lumps with a particle size of 10-45mm and stone powder with a particle size of 0-10mm and tail water;

[0053] Step 2: The 10-45mm block material in step 1 is subjected to the first jigging treatment by a single-stage jig machine to obtain 90% ore-containing material and 10% specification ore; then the 90% ore-containing material is subjected to the second jigging process Eliminate, get 75% no ore material and 15% middle ore;

[0054] Step 3: Shaping and vibrating the ore-free material obtained in step 2 to obtain shaped stones of 10-30mm and stone powder of 0-10mm; the porosity of the shaped stones is 40±2% , the specific gravity of the pile is less ...

Embodiment 3

[0061] Embodiment 3-a kind of processing technique of iron ore waste soil stone, as image 3 shown, including the following steps:

[0062] Step 1: Pass the waste soil and stones from the dump site through the jaw crusher and the cone crusher for two-stage circular crushing, and then perform wet screening treatment to obtain lumps with a particle size of 10-45mm and stone powder with a particle size of 0-10mm and tail water;

[0063] Step 2: Put the 10-45mm block material in step 1 through the single-stage jig machine for the first jigging treatment to obtain 75% ore-free material and 25% enriched material; then perform the second jigging process on the enriched material Eliminate, get 10% specification ore and 15% medium ore;

[0064] Step 3: Shaping and vibrating the ore-free material obtained in step 2 to obtain shaped stones of 10-30mm and stone powder of 0-10mm; the porosity of the shaped stones is 40±2% , the specific gravity of the pile is less than 1.6 tons / m 3 ; ...

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Abstract

The invention provides a processing technology of iron ore waste earth and stone, which includes: 1. crushing waste earth and stone to obtain 10-45mm block material, 0-10mm stone powder and tail water; Grade jigging, to obtain standard ore, medium ore, ore-free materials; 3. Shaping non-ore materials to obtain shaped stones and stone powder; 4. Mix medium ore and stone powder for secondary dissociation to obtain 0-5mm stone powder 5. Jig the stone powder ore to obtain coarse powder ore and sand powder; 6. Magnetically separate the sand powder to obtain machine-made sand, medium ore powder and tail water; 7. Strongly magnetically separate the tail water to obtain iron-containing tail water water and iron-free tail water; 8. Concentrate and press-filter the iron-free tail water to obtain dry tailings; 9. Mix and press-filter the tail water from step 1, slag powder and iron-containing tail water to obtain high-iron soil The present invention can not only fully guarantee the quality and recovery rate of high-value iron ore, but also increase the value of stone materials and turn waste into treasure at the same time, so as to realize environmental protection and efficient recycling of iron ore waste earth and stone resources.

Description

technical field [0001] The invention relates to the technical field of ore dressing and processing, in particular to a processing technology of iron ore waste earth and rock. Background technique [0002] In the iron ore mining process, a large amount of waste earth and stone will be produced. If it is not harmlessly treated and reused, it will occupy a large amount of land resources, and there will be long-term potential hazards such as pollutant seepage and landslides. Carry out scientific and effective recycling. At present, the exploratory treatment process for iron ore waste soil and stone mainly adopts the "dry crushing---magnetic separation" route and the "wet crushing---jigging beneficiation" route. For the "dry crushing --- magnetic separation" process, often because the iron ore in the waste soil is a weak magnetic mineral, the separation effect is very poor, and there is a problem of serious dust pollution; for the "wet crushing --- jump Because the main purpose...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B02C21/00B03B9/00
CPCB02C21/00B03B9/00
Inventor李宝国
Owner李宝国