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A light-weight heat-insulating nickel metallurgical waste slag foam ceramic and its preparation method

A foamed ceramic, lightweight thermal insulation technology, applied in ceramic products, ceramic material production, clay products, etc., can solve the problems of low porosity and high density, and achieve the effect of low thermal conductivity, low density and uniform distribution

Active Publication Date: 2021-11-23
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN105601320A discloses a porous ceramic prepared by using magnesium-rich metallurgical nickel slag and its preparation method. By adding starch and activated carbon to make pores, a porous ceramic with high compressive strength and bending strength is obtained, but the density is relatively large, greater than 1500kg / m 3 , the porosity is low, less than 50%

Method used

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  • A light-weight heat-insulating nickel metallurgical waste slag foam ceramic and its preparation method
  • A light-weight heat-insulating nickel metallurgical waste slag foam ceramic and its preparation method
  • A light-weight heat-insulating nickel metallurgical waste slag foam ceramic and its preparation method

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Comparison scheme
Effect test

Embodiment 1

[0024] The pottery of this embodiment comprises 76 parts of basic ceramic raw materials, 22 parts of foam and 2 parts of curing agent. The specific substances included in the three raw materials are shown in Table 1 below, wherein the specific content of the raw material groupings is relative to each of them.

[0025] The ceramic raw material of table 1 embodiment 1

[0026]

[0027] The preparation method of this ceramic comprises the steps:

[0028] (1) Nickel slag is crushed and ground through a 200-mesh sieve, and magnetically separated, the magnetic field strength is 5000Oe, and the nickel slag is collected after magnetic separation;

[0029] (2) Pour 20 parts of nickel slag, high alumina cement, kaolin, sodium hexametaphosphate and water after magnetic separation into a ball mill tank, and mix the mixture for 0.5 hours to obtain a uniformly mixed slurry;

[0030] (3) Sodium myristate, egg white, polyacrylamide and 88.2 parts of water were used to work for 5 minutes ...

Embodiment 2

[0037] The pottery of this embodiment comprises 76 parts of basic ceramic raw materials, 22 parts of foam and 2 parts of curing agent. The specific substances included in the three raw materials are shown in Table 2 below, wherein the specific content of the raw material groupings is relative to each of them.

[0038] The ceramic raw material of table 2 embodiment 2

[0039]

[0040]

[0041] The preparation method of this ceramic comprises the steps:

[0042] (1) Nickel slag is crushed and ground through a 200-mesh sieve, and magnetically separated, the magnetic field strength is 10000Oe, and the nickel slag is collected after magnetic separation;

[0043] (2) Pour 20 parts of nickel slag, high alumina cement, kaolin, sodium hexametaphosphate and water after magnetic separation into a ball mill tank, and mix the mixture for 0.5 hours to obtain a uniformly mixed slurry;

[0044] (3) Sodium phthalate monofatty alcohol ester, egg white, polyacrylamide and 88.2 parts of w...

Embodiment 3

[0050]The pottery of this embodiment comprises 76 parts of basic ceramic raw materials, 22 parts of foam and 2 parts of curing agent. The specific substances included in the three raw materials are shown in Table 3 below, wherein the specific content of the raw material groupings is relative to each of them.

[0051] The ceramic raw material of table 3 embodiment 3

[0052]

[0053]

[0054] The preparation method of this ceramic comprises the steps:

[0055] (1) Nickel slag is crushed and ground through a 200-mesh sieve, and magnetically separated, the magnetic field strength is 10000Oe, and the nickel slag is collected after magnetic separation;

[0056] (2) Pour 20 parts of nickel slag, high alumina cement, kaolin, sodium hexametaphosphate and water after magnetic separation into a ball mill tank, and mix the mixture for 0.5 hours to obtain a uniformly mixed slurry;

[0057] (3) Sodium α-olefin sulfonate, egg white, polyacrylamide and 88.2 parts of water were used t...

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Abstract

The invention discloses a lightweight heat-insulating nickel metallurgical waste slag foam ceramic and a preparation method thereof, comprising basic ceramic raw materials, a curing agent and a foam body; wherein, the basic ceramic raw materials include nickel slag, high alumina cement, kaolin, and sodium hexametaphosphate and water, the foam includes a foaming agent, a foam stabilizer and water; during preparation, the magnetically separated nickel slag, high alumina cement, kaolin, sodium hexametaphosphate and water are mixed by ball milling to obtain a slurry. Then, foaming agent, foam stabilizer and water are mixed to prepare foam, and finally slurry, foam and curing agent are mixed and stirred, demolded, dried and calcined to obtain foam ceramics. The foamed ceramics of the present invention not only have similar pore sizes and uniform distribution, but also have low density, high compression resistance, small thermal conductivity, and good thermal insulation performance; meanwhile, the preparation method is simple, energy-saving and environment-friendly, and can be applied industrially.

Description

technical field [0001] The invention belongs to the field of ceramic preparation, in particular to a lightweight heat-insulating nickel metallurgical waste slag foam ceramic and a preparation method thereof. Background technique [0002] Ceramic foam is a porous ceramic material with a three-dimensional structure. Ceramic foam has high porosity, high strength, good sound and heat insulation performance, and stable chemical properties. It is widely used in metallurgy, aerospace, automobiles and other fields, and can be used as heat insulation, insulation, and catalyst carrier. , filters, etc., the application prospect is very broad. [0003] There are many processes for preparing foam ceramics, mainly including adding pore-forming agents, foaming process, organic foam impregnation method, sol-gel method, extrusion molding and so on. Among them, the foaming process and the addition of pore-forming agents are widely used. The foaming process refers to adding a foaming agent t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/10C04B33/138C04B33/13
CPCC04B33/1305C04B33/131C04B33/138C04B38/106C04B2235/447C04B2235/449C04B2235/9607Y02P40/60
Inventor 吴其胜陈秋静黄子宸诸华军杨涛朱宝贵顾斌
Owner YANCHENG INST OF TECH