Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Technique for firing spinel-type black ceramic material with tunnel kiln

A black ceramic pigment and spinel-type technology, which is applied to the process field of firing spinel-type black ceramic materials in a tunnel kiln, can solve the problems of high energy consumption and low production capacity, and achieves strong color development ability and low cost. Low, high productivity

Inactive Publication Date: 2015-01-28
佛山市南海万兴材料科技有限公司
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing calcination technology generally adopts shuttle kiln, which is an intermittent production mode with low production capacity and high energy consumption

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The technique of firing the spinel type black ceramic pigment with the tunnel kiln of the present embodiment comprises the steps:

[0039] 1) Mix the matrix raw materials chromium oxide green, iron oxide red, cobalt oxide, and nickel oxide in a mass ratio of 30:38:18:14 evenly;

[0040] 2) Put the above mixture into a sagger, load 8 minutes full, stack the saggers crosswise, place them in the traditional gas shuttle kiln and tunnel kiln for calcination respectively;

[0041] Calcination process of gas shuttle kiln: 25℃-500℃, heating up 2H, 500℃-1000℃, heating up 3H, 1000℃-1250℃, heating up 3H; The particle size D90 is 13-18μm. denoted as C;

[0042] Tunnel kiln calcination process: preheating zone 1200°C, high temperature zone 1250°C; transmission speed: about 17H from feeding to discharging; ventilation creates negative pressure in the kiln, and finally cools naturally; denoted as D;

[0043] 3) Grinding the cooled calcined product, adding concentrated hydrochloric ...

Embodiment 2

[0058] The technique of firing the spinel type black ceramic pigment with the tunnel kiln of the present embodiment comprises the steps:

[0059] 1) Mix the matrix raw materials chromium oxide green, iron oxide red, cobalt oxide, and nickel oxide in a mass ratio of 30:38:18:14 evenly;

[0060] 2) Put the above mixture into a sagger, load 8 minutes full, stack the saggers crosswise, place them in a tunnel kiln for calcination, but adjust the atmosphere in the kiln separately, the experiment is as follows:

[0061] Tunnel kiln calcination, preheating zone 1200°C, high temperature zone 1250°C; transmission speed: about 17H from feeding to discharging; ventilation creates negative pressure in the kiln, and finally cools naturally; denoted as D;

[0062] Tunnel kiln calcination, preheating zone 1200°C, high temperature zone 1250°C; transmission speed: about 17H from feeding to discharging; there is no draft in the kiln, natural smoke exhaust, and finally natural cooling; denoted as...

Embodiment 3

[0074] The technique of firing the spinel type black ceramic pigment with the tunnel kiln of the present embodiment comprises the steps:

[0075] 1) Mix the matrix raw materials chromium oxide green, iron oxide red, cobalt oxide, and nickel oxide in a mass ratio of 25:30:25:20;

[0076] 2) Put the above mixture into a sagger, load 8 minutes full, stack the saggers crosswise, place them in a tunnel kiln for calcination, and the calcination process conditions are as follows:

[0077] The preheating zone is 1170°C, the high temperature zone is 1200°C; transmission speed: about 15H from feeding to discharging; the draft creates negative pressure in the kiln, and finally cools naturally;

[0078] 3) Grinding the cooled calcined product, adding concentrated hydrochloric acid to pickle the powder, the mass ratio of concentrated hydrochloric acid: powder: water is 2.5:100:50, stir after adding to make the reaction fully, then stir and wash with water until the pH is 7;

[0079] 4) St...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a technique for firing a spinel-type black ceramic material with a tunnel kiln, which comprises the following steps: 1) uniformly mixing 25-40 wt% of chrome oxide green, 30-45 wt% of iron oxide red, 2-25 wt% of cobalt oxide, 10-20 wt% of nickel protoxide and 0-20 wt% of dopant; 2) filling the mixture obtained in the step 1) into a saggar by 70-80% full, calcining in a tunnel kiln, and naturally cooling the calcining product, wherein the technological conditions for calcination are as follows: the temperature of the preheating region is 1170-1250 DEG C, the temperature of the high-temperature region is 1200-1300 DEG C, and the transmission speed is 12-20 hours from charging to discharging; 3) pulverizing and grinding the cooled calcining product; and 4) adding concentrated hydrochloric acid to wash the calcining substance powder obtained in the step 3), stirring to sufficiently react, stirring, washing with water until the pH value is 7, drying and screening. The ceramic pigment has the advantages of high color development capacity and low cost.

Description

technical field [0001] The invention provides a process method for firing spinel-type black ceramic materials in a tunnel kiln, which improves the high-temperature stability and chemical stability of the spinel-type ceramic materials. Background technique [0002] Among ceramic pigments, spinel ceramic pigments are favored by the ceramic industry for their high temperature stability and chemical stability. There are a wide variety of spinel-type ceramic pigments, including black, blue, green, etc., among which blue and black ceramic pigments have always been one of the most used products in the ceramic industry. Nowadays, due to the popularity of black body bricks, the consumption of black ceramic pigments for green bodies has increased sharply. Blue and black ceramic pigments are mostly used in the production of high-grade glazed tiles or high-grade daily-use porcelain. However, due to the high price of raw materials and high production and processing costs of such spinel-...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C04B41/86
Inventor 周占明
Owner 佛山市南海万兴材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com