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A kind of high plasticity cement product mixed with iron dressing tailings powder and its preparation method

A cement product, high plasticity technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc. Ductility and crack and impermeability, excellent thermal insulation effect, the effect of promoting high value-added utilization

Active Publication Date: 2021-12-24
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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  • A kind of high plasticity cement product mixed with iron dressing tailings powder and its preparation method

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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-plastic cement product mixed with iron-separation tailings powder and a preparation method thereof. The material consists of the following components in parts by mass: kiln dust: 12-18 parts; gypsum: 15-20 parts parts; chalk: 20-35 parts; clay: 40-55 parts; correction material: 4-8 parts; iron tailings: 10-12 parts; high-strength fiber: 6-12 parts; ceramic micropowder: 7-15 parts; Grinding aid: 1‑2 parts. The material of the present invention can give full play to the gelation and filling effect of the non-metallic phase in the iron-separation tailings powder in the building material products, and promote the high added value utilization of the iron-separation tailings powder; at the same time, the high plasticity cement product overcomes the current large Some cement products have problems such as low tensile strength, deviation of deformation resistance, easy cracking and brittle failure; it not only has the advantages of good ductility, crack resistance and impermeability, but also because of its unique preparation method It also has excellent thermal insulation properties.

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 Patents(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