Unfired building block taking chrysotile mine stripped waste rock as aggregate and preparation method of unfired building block

A technology of chrysotile and mines, which is applied in the field of non-burning blocks and its preparation, can solve the problems of lack of resource utilization methods, surrounding environmental pollution, and expansion of sand and gravel sources, so as to alleviate the contradiction between supply and demand, alleviate the increasingly tense contradiction, The effect of broad application prospects

Active Publication Date: 2021-12-21
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are billions of tons of asbestos tailings produced in the country, but so far there is still no resource utilization method, which not only has potential pollution to the surrounding environment, but also caused a serious waste of resources in the second phase, expanding the source of sand and gravel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0055] In this example, the method of preparing unfired blocks using the waste rock stripped from the chrysotile mine as the aggregate is realized through the following steps:

[0056] Step 1: The surrounding rock of the chrysotile ore body is first crushed by jaws and cones in a negative pressure 1.8kpa workshop, and then sieved by impact crushing and shaping to obtain coarse-grained sandstone aggregates and sandstones The main components of the aggregate are serpentinite and slate.

[0057] Step 2: Scrub, wash, dedust, and filter and dry the coarse sandstone aggregates of different particle sizes obtained in step 1 to obtain refined chrysotile mine serpentinite-type stripped waste rock aggregates, wherein the obtained scrubbing, water washing and filtering Precipitated powder from water and wastewater and fine dust bag powder are roasted at 980°C for 8 minutes to convert serpentine into olivine and used as plastering materials.

[0058] Step 3: Mixing the refined chrysotile...

example 2

[0062] In this example, the method of preparing unfired blocks using the waste rock stripped from the chrysotile mine as the aggregate is realized through the following steps:

[0063] Step 1: In the negative pressure 2.0kpa workshop, the rock wall of the chrysotile ore body is firstly crushed by jaws, vertical shaft crushers and screened by impact crushing to obtain the required particle size of machine-made sand and gravel aggregates, sand and gravel The main components of the aggregate are diopside garnet and quartz diorite.

[0064] Step 2: Scrub, wash, dedust, and filter and dry the machine-made sands of different particle sizes obtained in step 1 to obtain coarse aggregates of S12 to S14 grades. Fine powder, calcined at 800°C for 40 minutes to transform serpentine into olivine, used for plastering materials.

[0065] Step 3: Mixing the refined chrysotile mine serpentinite-type stripped waste rock aggregate obtained in step 2 with cement, additives, and water to obtain a...

example 3

[0069] In this example, the method of preparing unfired blocks using the waste rock stripped from the chrysotile mine as the aggregate is realized through the following steps:

[0070] Step 1: In the negative pressure 2.2kpa workshop of the surface weathered overburden of chrysotile ore bodies, firstly carry out jaw crushing and vertical shaft crushing, and after shaping by impact crushing, sieve to obtain coarse aggregates of different particle sizes. The main components of coarse aggregate are quartz diorite, diopside, calcite and dolomite.

[0071] Step 2: Scrub, wash, dedust, filter and dry the coarse aggregates of different particle sizes obtained in step 1 to obtain the refined chrysotile mine serpentine-type stripped waste rock aggregate required for unburned bricks, wherein the obtained scrubbing, water washing And filtered wastewater sediment powder and dust bag fine powder, roasted at 900 ° C for 15 minutes to convert the serpentine into olivine, which is used for pl...

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Abstract

The invention provides an unfired building block taking chrysotile mine stripped waste rock as aggregate and a preparation method of the unfired building block. The method comprises the following steps: carrying out attribute crushing, shaping and screening on chrysotile mine stripped waste rock raw materials to obtain rough machine-made sand aggregate; scrubbing, washing with water to remove dust and filtering water to obtain refined machine-made sand aggregate; uniformly mixing the refined machine-made sand aggregate with cement, an auxiliary agent and water to obtain a plastic mixture; demoulding after compression molding to obtain an unfired building block green body; and after setting, curing the green body to obtain the unfired building block. The unfired building block is prepared by taking chrysotile mine stripped waste rocks as aggregates, so that the material range of unfired bricks can be expanded, and the source and range of building block materials can be expanded; and besides the performance of a concrete block, the prepared unfired building block also has good fire resistance.

Description

technical field [0001] The invention relates to the technical field of resource utilization of ultrabasic rock type chrysotile mine waste rocks, in particular to an unfired block using chrysotile mine waste rocks as aggregates and a preparation method thereof. Background technique [0002] In the mining process of ultrabasic rock-type chrysotile mines, in order to expose and mine ores, the surrounding rock serpentinite around the chrysotile ore body and the non-ore serpentinite in the ore body are stripped and removed to form a chrysotile mine Serpentinite-type exfoliated waste rock. [0003] With the promotion and application of new wall materials, the research and development of key supporting mortar suitable for various new masonry structures and new walls is obviously lagging behind. The development has laid a good foundation. [0004] The main materials of non-fired blocks are cement and sand and gravel, but with the acceleration of urbanization in China, natural sand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/12C04B20/02C04B20/04C04B28/04
CPCC04B18/12C04B20/04C04B20/026C04B20/02C04B28/04C04B2201/20C04B20/0048C04B22/064C04B22/143Y02W30/91
Inventor 孙红娟彭同江罗利明唐颂
Owner SOUTHWEAT UNIV OF SCI & TECH
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