Formula for producing post porcelain insulator by using industrial alumina powder instead of high-quality alumina powder by dry method and preparation method and application thereof

A pillar porcelain insulator and industrial alumina technology, applied in the field of insulators, can solve problems such as large internal stress, high firing temperature, and difficult molding, and achieve the effects of small strength dispersion, complete fuel combustion, and good whiteness of the porcelain body

Inactive Publication Date: 2019-07-05
SINOMA JIANGXI ELECTRICAL PORCELAIN ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical application, due to the difficulty in forming, large internal stress, and high firing temperature, domestic and foreign electric porcelain manufacturers have not been able to apply industrial alumina powder to dry-process production of porcelain insulators, only in wet-process production. There are application reports in the process

Method used

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  • Formula for producing post porcelain insulator by using industrial alumina powder instead of high-quality alumina powder by dry method and preparation method and application thereof
  • Formula for producing post porcelain insulator by using industrial alumina powder instead of high-quality alumina powder by dry method and preparation method and application thereof
  • Formula for producing post porcelain insulator by using industrial alumina powder instead of high-quality alumina powder by dry method and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Table 1 Preparation of porcelain insulator formula

[0037]

[0038] The preparation process of the porcelain insulator is as follows:

[0039] (1) Prepare the raw materials according to the formula in Table 1. Weigh industrial alumina powder, kaolin, feldspar, scouring soil, barium carbonate and 9300 according to weight percentages, and add them to the ball mill in order, set the milling time to 11h, and continue the milling;

[0040] (2) After passing the particle size test, sieving and grinding;

[0041] (3) After removing iron from the new slurry, it is spray-dried to make powder through ion high-speed atomization granulation equipment, and transported to the silo for aging for 24 hours;

[0042] (4) The stale powder is pressed into a blank by a large-scale dry cold isostatic press. The blank pressing curve is: 0~30MPa, 4min; 30MPa holding pressure for 1min; 30~60MPa, 2min; 60MPa , Pressure holding 1min; 60~105MPa, 2min; 105MPa pressure holding 1min; 105~60MPa, 2min; 60MPa ...

Embodiment 2

[0053] Table 3 Preparation of porcelain insulator formula

[0054]

[0055] The preparation process of the porcelain insulator is as follows:

[0056] (1) Prepare the raw materials according to the formula in Table 3. Weigh industrial alumina powder, kaolin, feldspar, Jingyang soil, scouring soil, barium carbonate, talc and PC-64 according to weight percentages, and add them to the ball mill in order, set the milling time to 11.5h, and continue the milling ;

[0057] (2) After passing the particle size test, sieving and grinding;

[0058] (3) After removing the iron from the new slurry, it is spray-dried to make powder through the high-speed ion atomization granulation equipment, and transported to the silo for 22 hours;

[0059] (4) The stale powder is pressed into a blank by a large-scale dry-process cold isostatic press; the blank pressing curve is: 0~30MPa, 4min; 30MPa holding pressure for 1min; 30~60MPa, 2min; 60MPa , Pressure holding 1min; 60~105MPa, 2min; 105MPa pressure holdi...

Embodiment 3

[0070] Table 5 Preparation of porcelain insulator formula

[0071]

[0072] The preparation process of the porcelain insulator is as follows:

[0073] (1) Prepare the raw materials according to the formula in Table 5. Weigh industrial alumina powder, kaolin, feldspar, scouring soil, barium carbonate and 9300 according to weight percentages, and add them to the ball mill in order, set the milling time to 11.5h, and continue the milling;

[0074] (2) After passing the particle size test, sieving and grinding;

[0075] (3) After removing the iron from the new slurry, it is spray-dried into powder through the high-speed ion atomization granulation equipment, and transported to the silo for aging for 24 hours;

[0076] (4) The stale powder is pressed into a blank by a large-scale dry-process cold isostatic press; the blank pressing curve is: 0~30MPa, 4min; 30MPa holding pressure for 1min; 30~60MPa, 2min; 60MPa , Pressure holding 1min; 60~105MPa, 2min; 105MPa pressure holding 2min; 105~60MP...

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Abstract

The invention relates to a formula for producing a post porcelain insulator by using industrial alumina powder instead of high-quality alumina powder by a dry method and a preparation method and application thereof, and belongs to the technical field of insulators. The formula for producing the post porcelain insulator by using the industrial alumina powder instead of the high-quality alumina powder in the dry method comprises, by weight, 12-16% of the industrial alumina powder, 28-36% of kaolin, 28-36% of flux mineral, 18-22% of elutriation soil, 0.5-3% of an additional mineralizer and 0.15-0.4% of a dispersant, wherein the mineralizer is one or more of barium salt, magnesium salt or talc. By the adoption of the formula for producing the post porcelain insulator by using the industrial alumina powder instead of the high-quality alumina powder by the dry method, the design is simple and scientific; a prepared product has small intensity dispersibility and high intensity; a formed blankis uniform in density and low in internal stress; and meanwhile, the invention provides the simple and convenient preparation method and application.

Description

Technical field [0001] The invention relates to a formula for dry-method production of pillar porcelain insulators by replacing high-quality alumina powder with industrial alumina powder, and a preparation method and application thereof, belonging to the technical field of insulators. Background technique [0002] Mine resources are non-renewable resources. With the rapid development of my country's economy, the rapid growth of aluminum production and consumption, and the continuous consumption of high-quality bauxite resources, have brought a great impact on the production of aluminum porcelain in the electric porcelain industry. In addition, the state has paid more and more attention to the management and prevention of the ecological environment in recent years, and has successively closed down a large number of small and medium-sized alumina production enterprises that did not meet environmental protection standards, and the supply of bauxite is also facing a shortage. In add...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/26C04B33/13C04B33/04C04B33/34
CPCC04B33/04C04B33/13C04B33/26C04B33/34C04B2235/3215C04B2235/3217C04B2235/602C04B2235/6567C04B2235/96
Inventor 阎法强丁彦霞王国栋张旭昌桑建华赵海洋袁志勇王健崔轲
Owner SINOMA JIANGXI ELECTRICAL PORCELAIN ELECTRIC CO LTD
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