Pyrite beneficiation tailing autoclaved aerated concrete block and production process thereof

A concrete block, autoclaved gas filling technology, applied in the direction of climate sustainability, other household appliances, sustainable waste treatment, etc., can solve the problems of utilization of pyrite beneficiation tailings, production technology and methods, etc., to achieve Good processing performance, good shock resistance and high strength

Inactive Publication Date: 2010-07-28
GUANGDONG BUILDING MATERIAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mine tailings have a large number of related resource comprehensive utilization technologies and products implemented in industrialized production examples and results

Method used

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  • Pyrite beneficiation tailing autoclaved aerated concrete block and production process thereof
  • Pyrite beneficiation tailing autoclaved aerated concrete block and production process thereof
  • Pyrite beneficiation tailing autoclaved aerated concrete block and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The pyrite ore dressing tailings autoclaved aerated concrete block provided in this embodiment is made of the following raw materials in parts by weight:

[0029] Pyrite ore dressing tailings 50

[0030] River sand 25

[0031] lime 19

[0032] cement 5

[0033] plaster 1

[0034] Aluminum powder paste 0.09

[0035] Foam stabilizer 0.07

[0036] The production process of the pyrite dressing tailings autoclaved aerated concrete block provided in this embodiment comprises the following steps:

[0037] (1) Preparation of raw materials: Mix river sand with pyrite beneficiation tailings according to the above ratio, add water and stir in a pulping tank to make a specific gravity of 1.70g / cm 3 The mortar is stored in the mortar tank for later use; the crushed lime and gypsum are mixed according to the above ratio, and after being mixed by a lime ball mill, they are stored in the lime tank for later use; the aluminum powder paste and the foam stabilizer are added with wat...

Embodiment 2

[0047] The pyrite ore dressing tailings autoclaved aerated concrete block provided in this embodiment is made of the following raw materials in parts by weight:

[0048] Pyrite ore beneficiation tailings 75

[0049] lime 15

[0050] cement 9

[0051] plaster 1

[0052] Aluminum powder paste 0.09

[0053] Foam stabilizer 0.06

[0054]Among them, lime and gypsum need to be ball milled before use, and the specific surface area of ​​lime and gypsum after ball milling is 3500-4000cm 2 / g, pyrite beneficiation tailings do not need ball milling process.

[0055] The production process of the pyrite dressing tailings autoclaved aerated concrete block provided in this embodiment comprises the following steps:

[0056] (1) Raw material preparation: Add water to pyrite dressing tailings and stir in a slurry tank to make a specific gravity of 1.72g / cm 3 The mortar is stored in the mortar tank for later use; the crushed lime and gypsum are mixed according to the above ratio, and aft...

Embodiment 3

[0066] The pyrite ore dressing tailings autoclaved aerated concrete block provided in this embodiment is made of the following raw materials in parts by weight:

[0067] Pyrite ore dressing tailings 15

[0068] Sea sand 60

[0069] lime 20

[0070] cement 4

[0071] plaster 1

[0072] Aluminum powder paste 0.10

[0073] Foam stabilizer 0.05

[0074] Among them, river sand, sea sand or sedimentary sand must be ball milled before use. After ball milling, the fineness of river sand, sea sand or sedimentary sand is 0.08mm square hole sieve and the residue is less than 20%. Lime and gypsum need to be ball milled before use. The specific surface area of ​​lime and gypsum is 3500-4000cm 2 / g, pyrite beneficiation tailings do not need ball milling process.

[0075] The production process of the pyrite dressing tailings autoclaved aerated concrete block provided in this embodiment comprises the following steps:

[0076] (1) According to the above formula, cast a mold (3.78m 3 ...

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Abstract

The invention discloses a pyrite beneficiation tailing autoclaved aerated concrete block, which is prepared from raw materials in part by weight: 10-75 pyrite beneficiation tailing, 0-75 river sand or sea sand or deposit sand, 15-24 lime, 5-10 cement, 1.0-2.0 plaster, 0.05-0.10 aluminum powder plaster and 0.05-0.10 foam stabilizer. The pyrite beneficiation tailing autoclaved aerated concrete block has the characteristics of light weight, heat preservation, heat insulation, sound insulation, high strength, fire prevention, moth prevention and the like, as well as good earthquake resisting performance and processing performance and favorability for mechanical construction and is an green and energy-saving and environment-friendly building material. The invention also discloses a production process of the concrete block, which comprises the following steps: taking various raw materials according to the stoichiometric ratio; preparing slurry from the raw materials; and injecting the slurry into a die by pouring, forming gas, standing and curing, cutting and stacking, carrying out heat-moisture procuring before an autoclave, entering the slurry for steam pressure curing and demoulding after discharging the autoclave; and obtaining pyrite beneficiation tailing autoclaved aerated concrete. The process has the advantages of remarkable energy-saving effect, low production cost and high clean production degree.

Description

technical field [0001] The invention relates to pyrite dressing tailings autoclaved aerated concrete blocks and a production process thereof, belonging to the field of building materials. Background technique [0002] Pyrite is an important chemical mineral variety in my country, and it plays an increasingly important role in the development of the chemical industry and related industries. However, while mining and dressing pyrite, it also produces a large amount of solid waste - mineral processing tailings . In our country, the tailings of pyrite ore dressing have not been effectively utilized at present. A large amount of tailings are piled up in the tailings pond. In addition to occupying a large amount of land, it is also easy to pollute the environment. The safety of tailings ponds is also increasingly recognized by society. Highly concerned, the comprehensive utilization of resources of pyrite beneficiation tailings is of great significance. [0003] The building mate...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/12C04B14/06
CPCC04B2111/28C04B2111/52C04B28/18Y02W30/91C04B7/00C04B14/068C04B18/12C04B22/04C04B22/143C04B38/02C04B40/024C04B2103/48
Inventor 林克辉谢红波张立文
Owner GUANGDONG BUILDING MATERIAL RES INST
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