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The method for preparing alkali-slag cement retarder with alum slag

A technology of slag cement and jarosite slag, which is applied in the field of preparing alkali-slag cement retarder to achieve the effect of improving compactness

Inactive Publication Date: 2017-01-18
SOUTHWEAT UNIV OF SCI & TECH
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[0007] Ordinary concrete oil tanks cannot be used to store light petroleum products, because the oil easily penetrates into the open pores, and the well penetrates out along the capillary

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  • The method for preparing alkali-slag cement retarder with alum slag

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Embodiment Construction

[0014] A method for preparing alkali-slag cement retarder with jarosite slag, comprises the steps:

[0015] ① Add a dispersant to water, add alum slag and an oxidant, stir evenly, add lime, stir evenly, and let stand to separate the liquid and solid; ②Dry the solid phase to obtain a retarder; ③In the liquid phase The extractant is added to recover the silver metal, and the raffinate can be recycled as water in the step (1).

[0016] Wherein, reference table 1 is made for each component and addition amount of water, dispersant, jarosite slag, oxidizer, lime, extractant. Table 1 lists the formulation compositions of 12 examples numbered 1-12. After the retarder prepared by the method of the present invention is added to the alkali-slag cement, the initial setting time of the alkali-slag cement is measured according to the national standard "cement standard consistency water consumption, setting time, stability (GBT1346-2011)". All are greater than 60 minutes.

[0017]

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Abstract

The invention discloses a method for preparing an alkali-slag cement retarder through jarosite slag. The method sequentially comprises the steps that a dispersing agent, the jarosite slag and an oxidizing agent are added into water and evenly stirred, lime is added, even stirring is carried out, and the mixture stands to achieve solid-liquid separation; solid phases obtained after solid-liquid separation are dried, and the alkali-slag cement retarder is obtained; an extraction agent is added into liquid phases obtained after solid-phase separation, valuable metal silver is recycled, and extraction liquid is recycled as water used in the first step. The method is simple and good in effect and has a significant benefit.

Description

technical field [0001] The invention relates to waste slag treatment, in particular to a method for preparing alkali-slag cement retarder by using ferrite slag produced by wet zinc smelting as raw material. Background technique [0002] In 1957, Professor V. De Glukhovsky of Kyiv Institute of Construction and Engineering, Ukraine, etc. used crushed stone, boiler slag or blast furnace slag to grind finely, or mixed quicklime with blast furnace slag and Portland cement (or without) , and then prepare the slurry with NaOH solution or water glass solution to obtain a gelled material with a strength of up to 120MPa and good stability. By 1959, they proved through further research that this cement, like Portland cement, can be hardened in water under standard and natural conditions, and can also be hardened under steam curing conditions. The cement is the current alkali-slag cement. [Wu Qisheng. Research and development of alkali slag cement [J]. China Building Materials Science a...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/20C04B24/18C04B24/34C04B24/04C04B103/22
Inventor 李玉香谭宏斌王进王军霞
Owner SOUTHWEAT UNIV OF SCI & TECH
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