Method for preparing rubber reinforcing filler by utilizing iron tailings

A technology for reinforcing fillers and iron tailings, which is applied in fibrous fillers, chemical instruments and methods, and inorganic pigment treatment. Comprehensive utilization value, the effect of small particle size

Active Publication Date: 2017-01-11
DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Natural clay, calcium carbonate, etc. are mostly used as rubber inorganic fillers, and tailings are rarely used, and the rubber inorganic fillers prepared by related technical solutions are cumbersome and costly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0013] (1) Desliming of iron tailings in advance: the iron tailings are screened and washed several times through a cylindrical ore washing machine to remove sediment and grass roots in the iron tailings until they are clarified with water.

[0014] (2) Classification and regrinding of iron tailings: classify the iron tailings through a hydrocyclone, finely grind the sand through a Raymond mill, and then return to the hydrocyclone. The overflow particle size is controlled below 400 mesh.

[0015] (3) Preparation of high-purity quartz sand: the iron tailings are passed through a high-gradient magnetic separator with a magnetic strength of 15,000 Gauss to remove iron from the ultra-fine quartz sand, and then the quartz sand is placed in a temperature-controlled reactor, and oxalic acid is added , keep the temperature at 70°C, react for 25 hours, remove harmful trace metal and non-metal impurities in the ultrafine quartz powder, in the static workshop, use deionized water to wash ...

example 2

[0019] (1) Desliming of iron tailings in advance: the iron tailings are screened and washed several times through a cylindrical ore washing machine to remove sediment and grass roots in the iron tailings until they are clarified with water.

[0020] (2) Classification and regrinding of iron tailings: classify the iron tailings through a hydrocyclone, finely grind the sand through a Raymond mill, and then return to the hydrocyclone. The overflow particle size is controlled below 400 mesh.

[0021] (3) Preparation of high-purity quartz sand: iron tailings are removed from ultra-fine quartz sand through a high-gradient magnetic separator with a magnetic strength of 10,000 gauss, and then the quartz sand is placed in a temperature-controlled reactor and lemon is added. Acid and sodium petroleum sulfonate, constant temperature at 75°C, react for 30 hours, remove harmful trace metal and non-metallic impurities in ultrafine quartz powder, in the static workshop, use deionized water to...

example 3

[0025] (1) Desliming of iron tailings in advance: the iron tailings are screened and washed several times through a cylindrical ore washing machine to remove sediment and grass roots in the iron tailings until they are clarified with water.

[0026] (2) Classification and regrinding of iron tailings: classify the iron tailings through a hydrocyclone, finely grind the sand through a Raymond mill, and then return to the hydrocyclone. The overflow particle size is controlled below 400 mesh.

[0027] (3) Preparation of high-purity quartz sand: iron tailings are removed from the ultra-fine quartz sand by a high-gradient magnetic separator with a magnetic strength of 50 gauss, and then the quartz sand is placed in a temperature-controlled reactor, and lemon is added. Acid, constant temperature at 100°C, react for 25 hours, remove harmful trace metal and non-metal impurities in ultrafine quartz powder, in the static workshop, use deionized water to wash away harmful trace impurities o...

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Abstract

The invention provides a method for preparing a rubber reinforcing filler by utilizing iron tailings. The method comprises the steps of iron tailing pre-desliming, iron tailing grading and regrinding, high-purity glass sand preparation and modified quartz sand preparation. The method for preparing the rubber reinforcing filler by utilizing the iron tailings can fully utilize high-silicon iron tailing resources to prepare the high-value-added rubber reinforcing filler, the filler is small in particle diameter and regular and uniform in shape, has strong rubber interface binding power and can effectively improve the abrasion resistance, toughness, compressive strength, fatigue resistance property and other mechanical properties of rubber, and the comprehensive utilization value of the iron tailings is improved.

Description

technical field [0001] The invention relates to the field of rubber preparation, in particular to a method for preparing rubber reinforcing fillers from iron tailings. Background technique [0002] The specification with application number 201110381203.6 discloses a method for preparing rubber filler by modifying fly ash waste slag after aluminum extraction by acid method. The fly ash waste slag after aluminum extraction by acid method is rinsed until neutral, then dried, crushed to 300 mesh, added with organic modifier, mixed at high speed, ground, and aged to form rubber filler. [0003] The specification with the application number 201410352742.0 discloses a method for recovering inorganic fillers from iron tailings, the obtained inorganic fillers and a method for modifying the inorganic fillers. In the method, firstly, the iron tailings are subjected to graded flotation to enrich the sericite, and the rubber reinforcing agent is obtained through modification treatment. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/30C09C3/08C09C3/12C08K9/06C08K3/36C08L21/00
CPCC08K3/36C08K9/06C09C1/3081C09C3/006C09C3/08C09C3/12C08L21/00
Inventor 马跃张勇高飞孙成亮李金典
Owner DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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