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High-plasticity cement product doped with iron ore dressing tailing powder and preparation method of high-plasticity cement product

A cement product, high plasticity technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of limited transportation distance, low added value, and low utilization rate of iron beneficiation tailings

Active Publication Date: 2020-10-30
JIANGSU DAFENG XINANDE MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these technologies have problems such as low added value, raw materials are limited by the transportation distance from the place of origin to market users, so the utilization rate of iron beneficiation tailings in my country is still in a low state.

Method used

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  • High-plasticity cement product doped with iron ore dressing tailing powder and preparation method of high-plasticity cement product

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a high-plasticity cement product mixed with iron-selection tailings powder, which consists of the following components in terms of parts by mass: kiln dust: 18 parts; dihydrate gypsum: 17 parts; chalk: 30 parts; Clay: 55 parts; Diatomite: 4 parts; Iron tailings: 12 parts; Concrete with fiber: 8 parts; Ceramic micropowder: 12 parts; Grinding aid: 1 part.

[0027] Above-mentioned a kind of preparation method of the high plasticity cement product that is mixed with iron-selection tailings powder comprises the following steps:

[0028] (1) Mix kiln dust, chalk, clay, and correction materials together to obtain a mixed raw material with a particle diameter of 20-22mm. Use a dryer to dry the mixed raw material. The moisture content in the mixed raw material is controlled at 1-22 mm. 1.5%;

[0029] (2) Send the above-mentioned dried mixed raw materials and grinding aids into a raw meal mill to prepare mixed powder, and the particle size of the mixed p...

Embodiment 2

[0034] This embodiment provides a high plasticity cement product mixed with iron-selection tailings powder, which consists of the following components in terms of parts by mass: kiln dust: 12 parts; dihydrate gypsum: 20 parts; chalk: 35 parts; Clay: 40 parts; Bauxite: 7 parts; Iron tailings: 11 parts; Concrete with fiber: 12 parts; Ceramic micropowder: 15 parts; Grinding aid: 2 parts.

[0035] Above-mentioned a kind of preparation method of the high plasticity cement product that is mixed with iron-selection tailings powder comprises the following steps:

[0036] (1) Mix kiln dust, chalk, clay, and correction materials together to obtain a mixed raw material with a particle diameter of 20-24 mm. Use a dryer to dry the mixed raw material. The moisture content in the mixed raw material is controlled at 1-24 mm. 1.8%;

[0037] (2) Send the above-mentioned dried mixed raw materials and grinding aids into a raw meal mill to prepare mixed powder, and the particle size of the mixed ...

Embodiment 3

[0042] This embodiment provides a high plasticity cement product mixed with iron-selection tailings powder, which consists of the following components in terms of parts by mass: kiln dust: 15 parts; dihydrate gypsum: 15 parts; chalk: 20 parts; Clay: 50 parts; siltstone: 8 parts; iron tailings: 10 parts; concrete with fiber: 6 parts; ceramic powder: 7 parts; grinding aid: 2 parts.

[0043] Above-mentioned a kind of preparation method of the high plasticity cement product that is mixed with iron-selection tailings powder comprises the following steps:

[0044] (1) Mix kiln dust, chalk, clay, and correction materials together to obtain a mixed raw material with a particle diameter of 20-25mm. Use a dryer to dry the mixed raw material. The moisture content in the mixed raw material is controlled at 1.2- 2%;

[0045] (2) Send the above-mentioned dried mixed raw materials and grinding aids into a raw meal mill to prepare mixed powder, and the particle size of the mixed powder is co...

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Abstract

The invention discloses a high-plasticity cement product doped with he iron ore dressing tailing powder and a preparation method of the high-plasticity cement product. The high-plasticity cement product comprises the following components in parts by mass: 12 to 18 parts of kiln ash, 15 to 20 parts of gypsum, 20 to 35 parts of chalk, 40 to 55 parts of clay, 4 to 8 parts of a correction material, 10to 12 parts of iron tailings, 6 to 12 parts of high-strength fibers, 7 to 15 parts of ceramic micro powder, and 1 to 2 parts of a grinding aid. The material provided by the invention can give full play to the gelling and filling effects of non-metallic phases in the iron ore dressing tailing powder in building material products, and promote the high-added-value utilization of the iron ore dressing tailing powder; meanwhile, the high-plasticity cement product overcomes the problems of low tensile strength, poor deformation resistance, high cracking tendency, high brittle failure tendency and the like in most of existing cement products; the high-plasticity cement product not only has the advantages of good ductility, crack resistance, permeability resistance and the like, but also has excellent thermal insulation performance due to the unique preparation method.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a high-plasticity cement product mixed with iron-separation tailings powder and a preparation method thereof. Background technique [0002] With the rapid development of my country's industrialization and the gradual increase of mining scale, the accumulation of mine tailings is increasing day by day. According to incomplete statistics, about 700 million tons of iron ore tailings are stockpiled and disposed of in my country every year. These large stockpiles of iron ore tailings not only occupy land, but also easily cause environmental pollution and other problems. For this reason, domestic relevant departments and people of insight have carried out a lot of research work on the comprehensive utilization of iron beneficiation tailings. At present, the technology formed in the field of building materials by iron ore selection tailings is mainly for the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B18/12C04B14/38C04B18/02
CPCC04B28/14C04B18/12C04B14/38C04B18/023C04B2201/50C04B2201/32C04B18/10C04B14/28C04B14/10C04B2103/52C04B14/08C04B14/303C04B14/06Y02W30/91
Inventor 冯垚李萍魏敦沛
Owner JIANGSU DAFENG XINANDE MINING CO LTD
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