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A kind of soil solidifying agent and its preparation method, the method for solidifying soil

A technology of soil curing agent and stabilizer, which is applied in the field of soil curing agent and its preparation, and soil curing, which can solve the problems of a large number of heat sources, large consumption, and economical improvement, so as to achieve high economic value and reduce the difficulty of reuse Effect

Active Publication Date: 2021-08-13
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the calcination process requires medium and high temperatures, and this process also requires a large amount of heat source and consumes a large amount of energy, and the economy needs to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0069] The preparation method of the soil solidifying agent comprises: mixing each component in the raw materials. In practice, it is preferable to fully mix the titanium extraction tailings, steel slag, desulfurized gypsum and sodium sulfate waste slag before mixing with the stabilizer. In this way, the undesired mutual interference between the stabilizer and other raw materials can be avoided through step-by-step mixing, which is beneficial to maintaining and improving the quality of the soil curing agent.

[0070] In the example of the present invention, a composite soil solidifying agent is prepared by adding titanium tailings, steel slag, desulfurized gypsum slag, and sodium sulfate waste slag in different proportions, which can achieve titanium tailings extraction. The purpose of large-scale utilization can be realized without dechlorination treatment, and the prepared soil solidifying agent can be used for road construction base, subbase filler, slag yard slope treatmen...

Embodiment 1

[0077] Use 54% of titanium extraction tailings, 15% of steel slag, 20% of desulfurized gypsum slag, 10% of sodium sulfate waste slag, and then add 1% of stabilizer to mix to prepare a soil solidifying agent.

[0078] The soil solidifying agent is mixed with cohesive soil to solidify the soil. The specific steps are: add this kind of soil solidifying agent into the soil at a ratio of 6%, and make a cylindrical test piece of 5cm*5cm in accordance with the requirements for the production of fine-grained soil samples in the "Test Regulations for Inorganic Binder Stable Materials in Highway Engineering". pieces. The moisture content of the soil was adjusted to 15%, and the test pieces were prepared by compaction molding method, and the prepared test pieces were put into the curing box for curing. The 28-day compressive strength of the specimen was 4.23MPa.

Embodiment 2

[0080] Use 60% of titanium extraction tailings, 14% of steel slag, 17% of desulfurized gypsum slag, 8% of sodium sulfate waste slag, and add 1% of stabilizer to mix to prepare a soil solidifying agent.

[0081] The soil solidifying agent is mixed with cohesive soil to solidify the soil. The specific steps are: add this kind of soil solidifying agent into the soil at a ratio of 6%, and make a cylindrical test piece of 5cm*5cm in accordance with the requirements for the production of fine-grained soil samples in the "Test Regulations for Inorganic Binder Stable Materials in Highway Engineering". The moisture content of the soil was adjusted to 15%, and the test pieces were prepared by compaction molding method, and the prepared test pieces were put into the curing box for curing. The 28-day compressive strength of the specimen was 5.14MPa.

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Abstract

A soil solidifying agent, a preparation method thereof, and a soil solidifying method belong to the field of environmental protection. The raw materials for making the soil solidifying agent mainly include: titanium slag, steel slag, desulfurized gypsum and sodium sulfate waste slag. In terms of weight percentage, the raw materials include: 50-60% of titanium extraction tailings, 10-15% of steel slag, 17-20% of desulfurized gypsum, and 8-15% of sodium sulfate waste slag. The soil solidifying agent provided in the example of the present invention can use undechlorinated titanium tailings as one of the raw materials, thereby realizing the efficient and low-cost use of titanium tailings, and then achieving the goal of avoiding titanium tailings Environmental Pollution.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a soil solidifying agent, a preparation method thereof, and a method for solidifying soil. Background technique [0002] Panzhihua Iron and Steel annually discharges about 3 million tons of titanium-containing blast furnace slag, of which the titanium dioxide content is between 20% and 26%. In order to make full use of the titanium resources in the blast furnace slag, Panzhihua Iron & Steel developed a high-temperature carbonization-low-temperature chlorination process to produce titanium tetrachloride. However, this process still produces a large amount of chlorinated tailings after extracting titanium resources. Generally, the resulting chlorination tailings are called titanium extraction tailings. In order to achieve the "green ecological" process, the tailings of titanium extraction must be utilized on a large scale. [0003] The chemical composition of titanium ext...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C09K17/08B09C1/08C09K103/00
CPCB09C1/08C04B28/144C04B2201/50C09K17/08C09K2103/00C04B18/144C04B18/142C04B18/0481C04B2103/0068C04B14/361
Inventor 任艳丽郝建璋邵国庆曾冠武
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP