Nickel slag composite machine-made sand and production method thereof

A technology of machine-made sand and nickel slag, applied in the field of machine-made sand, to achieve the effect of good combination, good environmental benefits and economic benefits, and sufficient sources

Inactive Publication Date: 2019-01-11
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology intends to use the electric furnace ferronickel slag and refined mixed slag produced by the RKEF nickel-iron smelting process to produce machine-made sand, and there is no report on related technologies so far

Method used

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  • Nickel slag composite machine-made sand and production method thereof
  • Nickel slag composite machine-made sand and production method thereof
  • Nickel slag composite machine-made sand and production method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A kind of nickel slag composite machine-made sand preparation, comprises the following steps:

[0032] The mixing ratio is designed as follows: the mass ratio of electric furnace ferronickel slag: dry basis refining mixed slag is 85:15 (the total mass can be 1 ton, the same below).

[0033] (1) Raw material analysis: Raw material analysis is performed on the electric furnace ferronickel slag and refining mixed slag. The analysis results are: the moisture content (by mass) of the electric furnace nickel-iron slag is 0.4%, the moisture content (by mass) of the refining mixed slag is 16.5%, and the particle size of the electric furnace nickel-iron slag used in this embodiment and the refining mixed slag raw material are both 0-10mm.

[0034](2) Drying treatment: the refined mixed slag is transported by a belt conveyor to a dryer for drying treatment to obtain a dry basis refined mixed slag.

[0035] (3) Manufactured sand preparation: transport the electric furnace nickel...

Embodiment 2

[0042] A kind of preparation of nickel slag composite machine-made sand, comprises the following steps:

[0043] The mixing ratio is designed as: electric furnace ferronickel slag: dry base refining mixed slag mass ratio relationship is 90:10.

[0044] (1) Raw material analysis: Raw material analysis is performed on the electric furnace ferronickel slag and refining mixed slag. The analysis results are: the moisture content (by mass) of the electric furnace nickel-iron slag is 0.7%, the moisture content (by mass) of the refining mixed slag is 18.0%, and the particle size of the electric furnace nickel-iron slag used in this embodiment and the refining mixed slag raw material are both 0-10mm.

[0045] (2) Drying treatment: the refined mixed slag is transported by a belt conveyor to a dryer for drying treatment to obtain a dry basis refined mixed slag.

[0046] (3) Manufactured sand preparation: transport the electric furnace nickel-iron slag with a predetermined mass ratio fr...

Embodiment 3

[0053] A kind of preparation of nickel slag composite machine-made sand, comprises the following steps:

[0054] The mixing ratio is designed as: electric furnace ferronickel slag: dry basis refining mixed slag mass ratio relationship is 100:0.

[0055] (1) Raw material analysis: Raw material analysis is performed on the electric furnace ferronickel slag and refining mixed slag. The analysis results are: the moisture content (by mass) of the electric furnace ferronickel slag is 0.6%, and the raw material particle size of the electric furnace ferronickel slag used in this embodiment is 0-10mm.

[0056] (2) Manufactured sand preparation: transport the electric furnace nickel-iron slag with a predetermined mass ratio from the raw material pile to the screening machine for primary screening, and 60% of the electric furnace nickel-iron slag particles with a particle size of 1.18-4.75mm are collected from the raw material pile. After the belt is transported to the vertical shaft im...

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Abstract

The invention discloses a nickel slag composite machine-made sand and a production method thereof. Electric furnace nickel-iron slag and refined mixed slag produced in the RKEF technology ferronickelsmelting process are screened and crushed, and then are mixed according to a certain ratio to obtain the composite machine-made sand. The nickel slag composite machine-made sand can meet the use requirements of mortar and concrete in the construction project, can improve the workability of a mortar and concrete mixture, and also can improve the strength of the mortar and the concrete. The invention also realizes the reuse of industrial waste slag, solves the problems of land occupation and soil and groundwater pollution of the waste slag, reduces the environmental pressure and obtains benefits.

Description

technical field [0001] The invention belongs to the technical field of machine-made sand, and specifically relates to a nickel-slag composite machine-made sand prepared by using electric furnace nickel-iron slag and refining mixed slag produced in the RKEF nickel-iron smelting process and a preparation method thereof. Background technique [0002] As a fine aggregate, sand acts as a skeleton and fills the voids of coarse aggregate in mortar and concrete, and is an indispensable component material. With the expansion of construction works, on the other hand, natural sand resources are becoming increasingly depleted, and due to the requirements of environmental protection to restrict mining and river sand mining, the natural sand used as fine aggregate has become a serious shortage. Therefore, it is necessary to seek It is imperative to replace natural sand with new materials and ways to prepare manufactured sand. At present, machine-made sand is mostly broken from rocks of v...

Claims

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Application Information

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IPC IPC(8): C04B18/14C04B20/02
CPCC04B18/144C04B20/026Y02W30/91
Inventor 殷素红马健颜波李坚荣黄敏荣刘祥东
Owner SOUTH CHINA UNIV OF TECH
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