Gold-copper ore neutralized slag cement retarder and preparation method thereof

A cement retarder and retarder technology, applied in the field of cement retarder, can solve the problems of high moisture content, achieve the effect of simple production process, reduce the overall moisture content, and increase the added value of comprehensive utilization

Inactive Publication Date: 2021-05-28
CHINA BUILDING TECHNOLOGY DEVELOPMENT CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main problem in the application of neutralization slag in gold-copper ore is that the moisture content is high. The moisture content of the original slag is as high as 50%. After the filter plate and frame filter press, the moisture content is generally 25-35%, and the moisture content is still high. , cannot be directly compacted into balls to prepare cement retarder

Method used

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  • Gold-copper ore neutralized slag cement retarder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The gold-copper ore neutralization slag cement retarder of the present embodiment is made from the following raw materials:

[0021] Component 1: 70kg of gold-copper ore neutralization slag;

[0022] Component 2: 20kg of desulfurized gypsum;

[0023] Component 3: Lime 10kg.

[0024] Among them, CaSO in gold-copper ore and slag 4 The content is 80wt%, and the water content is 35wt%.

[0025] The preparation steps are as follows:

[0026] (1) take each component by above-mentioned weight, for subsequent use;

[0027] (2) Mixing and stirring: mix and stir gold-copper ore neutralization slag, desulfurized gypsum and lime for 15 minutes;

[0028] (3) Drying: put the mixed material obtained in step (2) into a dryer for drying treatment, and control the moisture content to 12%;

[0029] (4) Compaction into balls: The dried mixture obtained in step (3) is compacted into balls, and the resulting spherical materials are stacked in the material shed, and allowed to dry natur...

Embodiment 2

[0031] The gold-copper ore neutralization slag cement retarder of the present embodiment is made from the following raw materials:

[0032] Component 1: 80kg of gold-copper ore neutralization slag;

[0033] Component 2: 15kg of desulfurized gypsum;

[0034] Component 3: Lime 5kg.

[0035] Among them, CaSO in gold-copper ore and slag 4 The content is 60wt%, and the water content is 20wt%.

[0036] The preparation steps are as follows:

[0037] (1) take each component by said ratio, for subsequent use;

[0038] (2) Mixing and stirring: mix and stir gold-copper ore neutralization slag, desulfurized gypsum and lime for 20 minutes;

[0039] (3) Drying: put the mixed material obtained in step (2) into a dryer for drying treatment, and control the moisture content to 12%;

[0040] (4) Compaction into balls: The dried mixture obtained in step (3) is compacted into balls, and the resulting spherical materials are stacked in the material shed and allowed to dry naturally for 1 day...

Embodiment 3

[0042] The gold-copper ore neutralization slag cement retarder of the present embodiment is made from the following raw materials:

[0043] Component 1: 80kg of gold-copper ore neutralization slag;

[0044] Component 2: 10kg of desulfurized gypsum;

[0045] Component 3: Lime 10kg.

[0046] Among them, CaSO in gold-copper ore and slag 4 The content is 35wt%, and the water content is 12wt%.

[0047] The preparation steps are as follows:

[0048] (1) take each component by said ratio, for subsequent use;

[0049] (2) Mixing and stirring: mix and stir gold-copper ore neutralization slag, desulfurized gypsum and lime for 25 minutes;

[0050] (3) drying: the mixed material obtained in step (2) is put into a dryer for drying treatment, and the moisture content is controlled at 10%;

[0051] (4) Compaction into balls: The dried mixture obtained in step (3) is compacted into balls, and the resulting spherical materials are stacked in the material shed and allowed to dry naturally...

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Abstract

The invention relates to a gold-copper ore neutralized slag cement retarder and a preparation method thereof, relating to a cement retarder, in particular to a cement retarder prepared by using gold-copper ore neutralized slag and a preparation method thereof. The purpose is to provide an economical and environment-friendly gold-copper ore neutralized slag cement retarder and a preparation method thereof. The gold-copper ore neutralized slag cement retarder of the present invention comprises 70-90 parts of gold-copper ore neutralized slag, 5-20 parts of desulfurized gypsum and 5-10 parts of lime; the preparation method of the present invention comprises the following steps: weighing the raw materials ; mixing and stirring; drying; compacting into balls. The preparation method of the gold-copper ore neutralized slag cement retarder of the present invention adopts the compound mode of gold-copper ore neutralized slag, desulfurized gypsum and lime to reduce the moisture content of the mixed material, and increase the overall CaSO4 content, so as to achieve the purpose of being used as cement Specific requirements for retarders. The invention belongs to the technical field of building materials.

Description

technical field [0001] The invention relates to a cement retarder, in particular to a cement retarder prepared by neutralizing slag from gold-copper ore and a preparation method thereof. Background technique [0002] Acidic arsenic-containing wastewater is an important source of pollution in the gold and copper smelting industry. Most of the arsenic appears in the form of trivalent. The common treatment method is to use lime and iron salt, that is, the method of secondary neutralization of lime milk and co-precipitation of ferrous sulfate. Measures such as controlling the pH value at the end point of the secondary neutralization reaction, adding ferrous sulfate, polyacrylamide flocculant and aeration, the Fe(OH) produced after ferrous sulfate is hydrolyzed and oxidized 3 It is a good co-precipitation agent, which can absorb and wrap the precipitate of arsenic; at the same time, arsenic reacts with the hydroxide of iron to form Fe(AsO 2 ) 3 Precipitation, these sediments ar...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C04B22/14C04B103/22
CPCC04B40/0039C04B2103/22C04B22/0006C04B22/145C04B22/064
Inventor王明远罗忠涛付毅李书华陈兴章
OwnerCHINA BUILDING TECHNOLOGY DEVELOPMENT CORP