Nickel-iron slag building material and preparation method thereof

A technology for building materials and nickel-iron slag, applied in the field of nickel-iron slag building materials and their preparation, can solve the problems of long setting time, low early strength, low pozzolanic activity and the like

Active Publication Date: 2022-01-07
吴联权
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The previous basic research found that adding ferronickel sand to concrete can increase the strength of concrete, which can greatly improve the use efficiency of concrete, and will not adversely affect the stability. However, du

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment relates to a nickel-iron slag building material, which comprises the following components in parts by weight: 55-60 parts of cement clinker, 18-20 parts of nickel-iron slag fine powder, 4-5 parts of gypsum, phosphate 3-6 parts, wherein, the ferronickel slag micropowder is made from industrial ferronickel slag, and the specific surface area obtained through the grinding process is 350-550m 2 / kg of fine powder.

Embodiment 2

[0034] This embodiment relates to a nickel-iron slag building material, which is the same as Embodiment 1, except that it includes an external early strength agent and a coagulation accelerator. Specifically, it includes the following components in parts by weight: cement clinker 55 -60 parts, 18-20 parts of ferronickel slag powder, 4-5 parts of gypsum, 3-6 parts of phosphate, 1-3 parts of sodium sulfate composite early strength agent, 1-2 parts of alumina clinker coagulation accelerator, of which , the ferronickel slag micropowder is made of industrial ferronickel slag as raw material, and the specific surface area obtained through the grinding process is 350-550m 2 / kg of fine powder.

Embodiment 3

[0036] This embodiment relates to a kind of ferronickel slag building material, same as embodiment 1, the difference is that: the ferronickel slag micropowder is surface-modified ferronickel slag micropowder, specifically, in parts by weight, including the following components Composition: 55-60 parts of cement clinker, 18-20 parts of ferronickel slag fine powder, 4-5 parts of gypsum, and 3-6 parts of phosphate, wherein the ferronickel slag fine powder is made of industrial ferronickel slag The specific surface area produced by the grinding process is 350-550m 2 / kg of fine powder;

[0037]The preparation method of the surface-modified ferronickel slag micropowder comprises the following steps:

[0038] S1. Crushing and grinding the industrial ferronickel slag, adding activated carbon powder or bituminous coal powder in a proportion of 1-2% by weight, pressing and forming, drying, and heat treatment in an atmosphere-protected high-temperature electric furnace. The heat treatm...

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PUM

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Abstract

The invention provides a nickel-iron slag building material and a preparation method thereof, and belongs to the technical field of metal smelting solid waste utilization. The nickel-iron slag building material comprises the following components by weight: 40-60 parts of cement clinker, 1-25 parts of nickel-iron slag micro powder, 2-8 parts of gypsum, 2-8 parts of phosphate, and 0.1-10 parts of an additive, wherein the nickel-iron slag micro powder is prepared by using industrial nickel-iron slag as a raw material and conducting a grinding process to obtain a micro powder with the specific surface area of 350-550 m<2>/kg. By optimizing and adjusting the grinding particle size, the blending ratio and the composition structural characteristics of the nickel-iron slag micro powder, the setting strength of the cement clinker is improved.

Description

technical field [0001] The invention relates to the technical field of metal smelting solid waste utilization, in particular to a ferronickel slag building material and a preparation method thereof. Background technique [0002] As a natural resource, river sand is an important raw material for concrete and mortar. In recent years, my country's investment in infrastructure construction has increased, resulting in an increasing demand for sand and gravel in the market, while the exploitation of natural resources has caused irreparable or irreparable damage to the environment. [0003] Ferronickel slag is industrial waste slag produced by water quenching and quenching after reduction and extraction of nickel and some iron. With the rapid development of my country's stainless steel and special alloy industries, a large amount of ferronickel slag has been obtained by smelting nickel alloy materials from loess nickel ore. In recent years, my country's nickel The annual discharge ...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B18/14C04B7/21C04B20/02C04B20/04
CPCC04B28/14C04B7/21C04B20/04C04B20/023C04B20/026C04B18/141C04B2111/00017C04B2201/50C04B7/00C04B22/16C04B22/147C04B2103/12Y02W30/91
Inventor 吴联权
Owner 吴联权
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