A kind of iron tailings composite self-insulation block and preparation method thereof

A technology of self-insulating blocks and iron tailings, applied in ceramic products, other household utensils, sustainable waste treatment, etc., can solve problems such as safety hazards and non-environmental protection, so as to relieve environmental pressure, reduce consumption, increase resistance The effect of flammability

Active Publication Date: 2021-08-17
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the thermal insulation core materials currently used are organic materials or rock wool, which are not environmentally friendly or have potential safety hazards

Method used

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  • A kind of iron tailings composite self-insulation block and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The invention relates to a composite self-insulation block of iron tailings, which is composed of an insulation inner core and a load-bearing frame covered outside the insulation inner core. The preparation method of the iron tailings composite self-insulation block first prepares the insulation inner core, and then carries out the preparation process of coating the load-bearing frame on the outside of the insulation inner core, and finally prepares the iron tailings composite self-insulation block . The weight ratio of the thermal insulation inner core to the load-bearing frame is 3:7.

[0040] 1. The preparation of the thermal insulation inner core is calculated in parts by weight, and the steps are as follows:

[0041] 1) Grinding and pulverizing the iron tailings and passing through a 120-mesh sieve to obtain iron tailings powder with a mesh size greater than 120 mesh;

[0042] 2) Take 30 parts of iron tailings powder obtained in step 1), 90 parts of cement, 30 pa...

Embodiment 2

[0053] The invention relates to a composite self-insulation block of iron tailings, which is composed of an insulation inner core and a load-bearing frame covered outside the insulation inner core. The preparation method of the iron tailings composite self-insulation block first prepares the insulation inner core, and then carries out the preparation process of coating the load-bearing frame on the outside of the insulation inner core, and finally prepares the iron tailings composite self-insulation block . The weight ratio of the thermal insulation inner core to the load-bearing frame is 4:6.

[0054] The preparation process of the thermal insulation inner core was repeated in Example 1, but the difference from Example 1 was that in the preparation process of the thermal insulation inner core, the amount of iron tailings powder added in step 2) was replaced by 50 parts, and the The amount of cement added in step 2) was replaced by 120 parts, and the rest of the conditions we...

Embodiment 3

[0057] The invention relates to a composite self-insulation block of iron tailings, which is composed of an insulation inner core and a load-bearing frame covered outside the insulation inner core. The preparation method of the iron tailings composite self-insulation block first prepares the insulation inner core, and then carries out the preparation process of coating the load-bearing frame on the outside of the insulation inner core, and finally prepares the iron tailings composite self-insulation block . The weight ratio of the thermal insulation inner core to the load-bearing frame is 2:8.

[0058] The preparation process of the thermal insulation inner core is repeated in Example 1, but the difference from Example 1 is that in the preparation process of the thermal insulation inner core, the amount of iron tailings powder added in step 2) is replaced by 20 parts, and the The amount of cement added in step 2) was replaced by 50 parts, and the rest of the conditions were t...

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PUM

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Abstract

The invention discloses an iron tailings composite self-insulation block and a preparation method thereof. The iron tailings composite self-insulation block includes an insulation inner core and a load-bearing frame coated outside the insulation inner core. The insulation inner core The weight ratio with the load-bearing frame is 1~5:6~10; in terms of parts by weight, the thermal insulation inner core includes the following components: 10~80 parts of iron tailings powder, 20~150 parts of cement, expanded perlite 10~40 parts, 0.1~5 parts of additives, 0.1~10 parts of foaming agent, 0.08~0.2 parts of foam stabilizer; the additive is composed of melamine water reducer, rubber powder and carboxymethyl cellulose, and the melamine reducing The weight ratio of the water solution, the rubber powder and the carboxymethyl cellulose is 1:0.5~1.5:1~10. Through the method of the invention, solid wastes such as iron tailings can be processed in large quantities, and the preparation conditions are simple, the raw materials are easy to obtain, and the industrialization is easy, and the prepared composite self-insulating block has wide applications. In terms of safety, the composite self-insulating block prepared by the invention is environmentally friendly and difficult to burn.

Description

technical field [0001] The invention relates to an iron tailing composite self-insulating block and a preparation method thereof. Background technique [0002] The total scale of my country's mineral resources development ranks among the top in the world. The outstanding characteristics of my country's iron ore resources are low grade and many symbiotic and associated ores, which lead to a large amount of iron tailings in the process of beneficiation, and 2.5-3.0 t tailings. Stockpiling iron tailings not only occupies a large amount of land, but also pollutes soil, water, air, etc., destroys the ecological environment, and has a great impact. [0003] The stockpiling of tailings has a great negative impact on the environment, and it is necessary to build a tailings pond, which not only takes up a lot of land, but also uses a lot of human resources and huge financial resources to maintain it, which greatly increases the demand for tailings. Capital investment in waste. And ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B38/10C04B38/02E04C1/40E04B2/02C04B111/28C04B111/40C04B18/12
CPCC04B28/04C04B2111/28C04B2111/40C04B2201/20C04B2201/32C04B2201/50E04B2/02E04C1/40C04B18/12C04B14/185C04B2103/42C04B2103/48C04B24/223C04B24/383C04B38/10C04B38/02Y02W30/91
Inventor 王建国杨骏宋鑫孔祥宇
Owner ZHEJIANG UNIV OF TECH
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