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Clinker-free steel slag micropowder composite soil consolidation agent

A technology of steel slag micro-powder and composite soil, which is applied in the direction of fertilizer mixture, organic fertilizer, soil conditioning materials, etc., can solve the pressure of environmental protection. To solve problems such as treatment and utilization, achieve the effects of adjustable setting time, good environmental coordination, and low cost

Active Publication Date: 2015-10-07
中诚正丰环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor gelling performance of steel slag, the current application research is not mature. Soda slag is a solid waste produced in the process of producing soda ash by ammonia-soda method in soda-making enterprises. It is one of industrial waste slags and has not been effectively utilized yet.
A large amount of steel slag and alkali slag have not been properly treated and utilized for a long time, which has caused a great impact on the surrounding environment; in addition, the desulfurization gypsum in power companies cannot be effectively used and the modern demand for building material resources is increasing day by day. The pressure of environmental protection and the pressure of resource shortage of building materials enterprises have not been effectively resolved for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The clinker-free steel slag powder composite soil consolidation agent is prepared according to the following weight percentages: steel slag powder 45%; desulfurization gypsum 25%; alkali slag 28%; aluminum slag 1%; admixture (sodium silicate) 1% .

[0029] The steel slag micropowder is the steel slag treated by the hot pouring method, which is activated and ball milled until the specific surface area is greater than 450 m 2 / kg of steel slag powder.

[0030] The activation treatment method of the steel slag comprises the following steps:

[0031] (1) Soak hot stuffy steel slag in the mixed solution of sodium silicate and sodium aluminate for 15 days, the mass percentage of sodium silicate in the mixed solution of sodium silicate and sodium aluminate accounts for the total amount of sodium silicate and sodium aluminate 50% to 90% of sodium aluminate, and the mass percentage of sodium aluminate accounts for 10 to 50% of the total amount of sodium silicate and sodium...

Embodiment 2

[0038] The clinker-free steel slag micropowder composite soil consolidation agent is prepared according to the following components by weight percentage: steel slag micropowder 60%; desulfurization gypsum 15%; alkali slag 20%; aluminum slag 2%; additives (sodium sulfate and sodium silicate One to one mix) 3%.

[0039] The steel slag micropowder is the steel slag treated by the hot pouring method, which is activated and ball milled until the specific surface area is greater than 450 m 2 / kg of steel slag powder.

[0040] The activation treatment method of the steel slag comprises the following steps:

[0041] (1) Soak hot stuffy steel slag in the mixed solution of sodium silicate and sodium aluminate for 15 days, the mass percentage of sodium silicate in the mixed solution of sodium silicate and sodium aluminate accounts for the total amount of sodium silicate and sodium aluminate 50% to 90% of sodium aluminate, and the mass percentage of sodium aluminate accounts for 10 to ...

Embodiment 3

[0048] The clinker-free steel slag powder composite soil consolidation agent is prepared according to the following weight percentages: steel slag powder 65%; desulfurization gypsum 15%; alkali slag 15%; aluminum slag 2%; admixture (calcium silicate) 3% .

[0049] The steel slag micropowder is the steel slag treated by the hot pouring method, which is activated and ball milled until the specific surface area is greater than 450 m 2 / kg of steel slag powder.

[0050] The activation treatment method of the steel slag comprises the following steps:

[0051] (1) Soak hot stuffy steel slag in the mixed solution of sodium silicate and sodium aluminate for 15 days, the mass percentage of sodium silicate in the mixed solution of sodium silicate and sodium aluminate accounts for the total amount of sodium silicate and sodium aluminate 50% to 90% of sodium aluminate, and the mass percentage of sodium aluminate accounts for 10 to 50% of the total amount of sodium silicate and sodium a...

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Abstract

The invention discloses a clinker-free steel slag fine powder composite soil solidifying agent. The clinker-free steel slag fine powder composite soil solidifying agent is characterized by being prepared from the following substances in percentage by weight: 35-70% of steel slag fine powder, 10-30% of synthetic gypsum, 5-30% of alkaline mud, 1-3% of aluminum slag and 1-5% of an additive. The clinker-free steel slag fine powder composite soil solidifying agent disclosed by the invention has the characteristic of remitting the environmental pressure from iron and steel enterprises, alkaline production enterprises and power enterprises and the pressure of the resource shortage of building material enterprises.

Description

technical field [0001] The invention relates to the technical field of soil consolidation, in particular to a clinker-free steel slag micropowder composite soil consolidation agent. Background technique [0002] Steel slag is solid waste produced by iron and steel enterprises in the ironmaking process. About 110 kg of steel slag will be produced for every 1,000 kg of steel produced. The annual output of steel slag in my country can reach tens of millions of tons. Due to the poor gelling performance of steel slag, the current application research is not mature. Alkali slag is a solid waste produced in the process of producing soda ash by ammonia-soda method in soda-making enterprises. It is one of the industrial waste residues and has not been effectively utilized yet. A large amount of steel slag and alkali slag have not been properly treated and utilized for a long time, which has caused a great impact on the surrounding environment; in addition, the desulfurization gypsum ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/12C09K17/40C09K17/08
Inventor 孙家瑛俞楠刘飞谢京来
Owner 中诚正丰环保科技有限公司
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