High-oil-absorption modified slag submicron powder and preparation method thereof

A technology of ultrafine powder and high oil absorption, which is applied in the field of steel slag ultrafine powder preparation, which can solve the problems of poor grindability of steel slag, difficulty in grinding steel slag, poor compatibility of steel slag, etc., and achieve the effects of improving compatibility, increasing oil absorption value, and simple preparation method

Inactive Publication Date: 2019-05-21
SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of poor grindability and poor compatibility of steel slag in the existing steel slag, the present invention provides a modified steel slag superfine powder with high oil absorption value and its preparation method, using steel slag grinding aid and steel slag modifier Carry out grinding aid and mo

Method used

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  • High-oil-absorption modified slag submicron powder and preparation method thereof
  • High-oil-absorption modified slag submicron powder and preparation method thereof
  • High-oil-absorption modified slag submicron powder and preparation method thereof

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Effect test

Embodiment 1

[0019] Taking the preparation of product 100g of the present invention as an example, the components used and their mass proportions are:

[0020]

[0021] Steel slag is desulfurization slag, steel slag grinding aid is a mixture of ethylene glycol, triethanolamine and absolute ethanol in a mass ratio of 3:2:1, ethylene glycol, triethanolamine and absolute ethanol are all analytically pure, and the steel slag modifier is A mixture of silane coupling agent and oxalic acid at a mass ratio of 6:1, the silane coupling agent is industrial pure KH550, the oxalic acid is industrial pure, and absolute ethanol is analytical pure.

[0022] Firstly, after mixing the steel slag and the steel slag grinding aid, use a frequency conversion planetary ball mill to grind for 100 minutes at a speed of 1000r / min to obtain superfine steel slag powder. Next, after mixing the superfine steel slag powder and absolute ethanol, stir with a constant temperature magnetic stirrer at 30° C. at a speed of...

Embodiment 2

[0024] Taking the preparation of product 100g of the present invention as an example, the components used and their mass proportions are:

[0025]

[0026] Steel slag is drum slag, steel slag grinding aid is a mixture of ethylene glycol, triethanolamine and absolute ethanol in a mass ratio of 1:2:3, ethylene glycol, triethanolamine and absolute ethanol are all analytically pure, and the steel slag modifier is A mixture of silane coupling agent and oxalic acid at a mass ratio of 10:1. The silane coupling agent is industrial pure KH570, the oxalic acid is industrial pure, and absolute ethanol is analytical pure.

[0027] Firstly, after mixing the steel slag and the steel slag grinding aid, use a frequency conversion planetary ball mill to grind for 90 minutes at a speed of 800r / min to obtain superfine steel slag powder. Next, after mixing the superfine steel slag powder and absolute ethanol, stir with a constant temperature magnetic stirrer at 35° C. at a speed of 600 r / min f...

Embodiment 3

[0029] Taking the preparation of product 100g of the present invention as an example, the components used and their mass proportions are:

[0030]

[0031] Steel slag is hot stuffy slag, steel slag grinding aid is a mixture of ethylene glycol, triethanolamine and absolute ethanol in a mass ratio of 1:1:1, ethylene glycol, triethanolamine and absolute ethanol are analytically pure, steel slag modifier It is a mixture of silane coupling agent and oxalic acid at a mass ratio of 4:1. The silane coupling agent is industrial pure KH560, the oxalic acid is industrial pure, and absolute ethanol is analytical pure.

[0032] Firstly, after mixing the steel slag with the steel slag grinding aid, use a frequency conversion planetary ball mill to grind for 120min at a speed of 600r / min to obtain superfine steel slag powder. Secondly, after mixing the superfine powder of steel slag with absolute ethanol, stir with a constant temperature magnetic stirrer at 25° C. at a speed of 800 r / min ...

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Abstract

The invention discloses high-oil-absorption modified slag submicron powder and a preparation method thereof. The high-oil-absorption modified slag submicron powder is prepared from, by weight, 40-50%of slag, 0.4-1.2% of a slag grinding aid, 1.5-2.5% of a slag modification agent and 48-58% of absolute ethyl alcohol; the slag and the absolute ethyl alcohol are mixed and then ground at the rotationspeed of 600-1,000 r/min for 90-120 min, then the mixture is mixed with the absolute ethyl alcohol, the mixture is stirred at the rotation of 500-800 r/min at 20-35 DEG C for 60-100 min, then the mixture is mixed with the slag modification agent, the mixture is stirred at the rotation speed of 500-800 r/min at 60-80 DEG C for 60-100 min, through filtering and ultrasonic washing, the mixture is dried at 60-80 DEG C for 10-16 h, and the powder is obtained. According to the method, the slag is subjected to grinding assistance and modification treatment, so that the problems are solved that in theprior art, the slag is poor in grindability and compatibility and is difficultly ground; the oil absorption of the slag submicron powder is increased.

Description

technical field [0001] The invention belongs to the technical field of steel slag superfine powder preparation, in particular to a modified steel slag superfine powder with high oil absorption value and a preparation method thereof. Background technique [0002] Steel slag is solid waste produced in the steelmaking process, accounting for about 15% to 20% of steelmaking output. Steel slag is mainly composed of oxides of calcium, iron, silicon, magnesium and a small amount of aluminum, manganese, phosphorus, etc. The main mineral phase is a solid solution formed by tricalcium silicate, dicalcium silicate, calcium magnesium olivine, calcium aluminate ferrite and oxides of silicon, magnesium, iron, manganese and phosphorus, and also contains a small amount of free calcium oxide and metal iron etc. At present, my country has accumulatively stockpiled more than 1 billion tons of steel slag. The stockpiling of a large amount of steel slag not only takes up space, but also pollut...

Claims

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Application Information

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IPC IPC(8): C04B24/42C04B20/02
Inventor 王林龙红明黄华张浩
Owner SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS
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