Method for preparing high-dosage cement active mixed material from metal tailings

A technology of active admixture and metal tailings, applied in cement production and other directions, can solve the problems of ineffective activation of activity and inability to refine specific surface area, achieve comprehensive utilization of high added value, reduce cement hydration heat, and protect ecology effects of the environment

Active Publication Date: 2013-12-04
厦门兑泰新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tailings of this process are not ground separately, and the specific surface area of ​​the tailings is generally 300-350m in the mixed grinding according to the above standards. 2 / g, the specific surface area cannot be refined, and the activity cannot be effectively stimulated

Method used

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  • Method for preparing high-dosage cement active mixed material from metal tailings
  • Method for preparing high-dosage cement active mixed material from metal tailings
  • Method for preparing high-dosage cement active mixed material from metal tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] 1. The metal tailings and tailings special activator are calculated according to the weight percentage, that is, 1kg of metal tailings is added with 0.3‰kg tailings special activator, the amount of gypsum is 2%, SO 3 The content does not exceed 3.5%. The specific surface area of ​​the entering mill is 420(±10)m 2 / g of metal tailings fine powder.

[0025] 2. The clinker grinding shall be carried out in accordance with the "Technical Conditions for the Determination Method of Cement Clinker Label", and the specific surface area shall be controlled at 300(±10)m 2 / kg. The dosage of gypsum is uniformly 5%, SO 3 The content does not exceed 3.5%.

[0026] 3. According to the percentage by weight, the metal tailing fine powder is mixed with the finely ground clinker (including gypsum) powder in an even ratio of 10%, 20% and 30% respectively. Prepare the test block according to the standard method, according to GB / T17671-1999 cement mortar strength test method, GB / T12957-...

Embodiment 2

[0030] 1. The metal tailings and tailings special activator are calculated according to the weight percentage, that is, 1kg of metal tailings is added with 0.4‰kg of tailings special activator, the amount of gypsum is 2.5%, SO 3 The content does not exceed 3.5%. The specific surface area of ​​the entering mill is 500(±10)m 2 / g of metal tailings fine powder.

[0031] 2. The clinker grinding shall be carried out in accordance with the "Technical Conditions for the Determination Method of Cement Clinker Label", and the specific surface area shall be controlled at 300(±10)m 2 / kg. The dosage of gypsum is uniformly 5%, SO 3 The content does not exceed 3.5%.

[0032]3. According to the percentage by weight, the metal tailing fine powder is mixed with the finely ground clinker (including gypsum) powder in an even ratio of 10%, 20% and 30% respectively. Prepare the test block according to the standard method, according to GB / T17671-1999 cement mortar strength test method, GB / T12...

Embodiment 3

[0036] 1. The metal tailings and tailings special activator are calculated according to weight percentage, that is, 1kg of metal tailings is added with 0.3‰kg tailings special activator, the amount of gypsum is 3%, SO 3 The content does not exceed 3.5%. The specific surface area of ​​the entering mill is 600(±10)m 2 / g of metal tailings fine powder.

[0037] 2. The clinker grinding shall be carried out in accordance with the "Technical Conditions for the Determination Method of Cement Clinker Label", and the specific surface area shall be controlled at 300(±10)m 2 / kg. The dosage of gypsum is uniformly 5%, SO 3 The content does not exceed 3.5%.

[0038] 3. According to the percentage by weight, the metal tailing fine powder is mixed with the finely ground clinker (including gypsum) powder in an even ratio of 10%, 20% and 30% respectively. Prepare the test block according to the standard method, according to GB / T17671-1999 cement mortar strength test method, GB / T12957-2005...

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Abstract

The invention provides a method for preparing a high-dosage cement active mixed material from metal tailings and relates to a production method for cement. The method is characterized by comprising the following steps of: mixing the metal tailings, a special tailings exciting agent comprising the main component polycarboxylic acid alcohol amine macromolecules and gypsum according to the percentage ratio, namely adding 0.02 to 0.05 percent kg of special tailings exciting agent comprising the main component polycarboxylic acid alcohol amine macromolecules and 0 to 5 percent kg of gypsum into 1 kg of metal tailings; and drying and grinding into ultrafine powder with the specific surface area of 800 to 400 m<2> / g to prepare the active mixed material, wherein the adding amount of the gypsum is based on that the sulfur trioxide content of the active mixed material does not exceed 3.5 weight percent; the metal tailings is any one of calcium magnesium type, high-silicon type, aluminum silicon type, iron silicon type, alkali aluminum silicon type, calcium aluminum silicon type and composite component type metal tailings; the ignition loss of the metal tailings is less than or equal to 10 percent; and the sulfur trioxide content is less than or equal to 3 percent. By the method, the potential activity is activated, and high-dosage and high-additional-value comprehensive utilization of the metal tailings is realized.

Description

Technical field: [0001] The invention relates to a cement production method, in particular to a method for producing a large-volume cement active admixture from metal tailings. Background technique: [0002] As a bulk man-made building material today, cement plays an important role in economic construction, but cement production consumes a large amount of non-renewable resources such as limestone, clay, coal, etc., and simultaneously emits hundreds of millions of tons of CO 2 , SO 2 and NOx and other waste gas and dust, the problems of resource consumption, energy consumption and environmental pollution in the production process are very prominent. [0003] Mine mining and mineral processing will produce a large amount of metal tailings. Metal tailings not only occupy a large area of ​​land, but also cause soil erosion, river channel silting, water pollution, and ecological environment damage. The comprehensive development and utilization of tailings is an important way fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/21
CPCY02P40/10
Inventor 彭其雨李生钉
Owner 厦门兑泰新材料科技有限公司
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