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Preparation method of low-cost ultra-white porcelain tile

A low-cost, porcelain tile technology, applied in the field of building materials, can solve the problems of narrow firing temperature range, low product whiteness, long firing cycle, etc., and achieve total cost savings of raw materials, high whiteness, and shortened firing. effect of cycles

Active Publication Date: 2015-09-23
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high price (500-3000 yuan / ton) and strong radioactivity of the above-mentioned chemical or calcined brighteners severely limit its use
In addition, Chinese patent CN1769236A discloses an ultra-white porcelain polished tile and its production method, using ball clay, raw magnesia clay, burnt magnesia clay and feldspar to produce porcelain polished tiles with a whiteness of 70, but the fired The temperature range is narrow, the firing cycle is long (80min), and the whiteness of the product is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Weigh raw materials by mass percentage: kaolin 36%, whitening mineral 40% (black talc 10%, diopside 30%, black talc and diopside mass ratio is 1:3), feldspar 15% (potassium Feldspar), quartz sand 9%. Mix the raw materials, then add 37% water, 4% polyvinyl alcohol, and 2% sodium tripolyphosphate (accounting for the mass ratio of the raw materials), and ball mill to prepare a slurry with a water content of 33%. The slurry has a 250-mesh sieve with 0.4 %, stale (stand still in the mud pool after pulping) for 27 hours for later use;

[0023] 2) sending the slurry obtained in step 1) into a spray drying tower for spray granulation to obtain green powder with a water content of 5.5%;

[0024] 3) Pressing the green body powder obtained in step 2) to obtain a green body, and then sending the green body into a drying kiln for drying at 210° C. for 4 minutes to obtain a dried green body;

[0025] 4) Apply transparent glaze to the dried green body obtained in step 3), and the...

Embodiment 2

[0028] 1) Weigh raw materials by mass percentage: kaolin 25%, whitening mineral 50% (black talc 25%, diopside 25%, black talc and diopside mass ratio is 1:1), feldspar 14% (potassium The mass ratio of feldspar to albite is 1:2), and quartz sand is 11%. Mix the raw materials, add 32% water, 4% polyvinyl alcohol, and 2% sodium tripolyphosphate (accounting for the mass ratio of raw materials), and ball mill to prepare a slurry with a water content of 35%. %, stale 48h standby;

[0029] 2) sending the slurry obtained in step 1) into a spray drying tower for spray granulation to obtain green powder with a water content of 5.7%;

[0030] 3) Pressing the green body powder obtained in step 2) to obtain a green body, and then sending the green body into a drying kiln for drying at 240° C. for 2 minutes to obtain a dried green body;

[0031] 4) Apply transparent glaze to the dried green body obtained in step 3), and then enter the roller kiln and burn at 1150° C. for 45 minutes to obt...

Embodiment 3

[0034] 1) Weighing raw materials by mass percentage: kaolin 40%, whitening mineral 45% (black talc 7.5%, diopside 37.5%, black talc and diopside mass ratio is 1:5), feldspar 9% (potassium Feldspar), quartz sand 6%. Mix the raw materials, then add 30% water, 4% polyvinyl alcohol, and 2% sodium tripolyphosphate (accounting for the mass ratio of raw materials), and ball mill to prepare a slurry with a water content of 36%. The slurry has a 250-mesh sieve with 0.3 %, stale 60h standby;

[0035] 2) sending the slurry obtained in step 1) into a spray drying tower for spray granulation to obtain green powder with a water content of 5.5%;

[0036] 3) Pressing the green body powder obtained in step 2) to obtain a green body, and then sending the green body into a drying kiln for drying at 220° C. for 3 minutes to obtain a dried green body;

[0037] 4) Apply transparent glaze to the dried green body obtained in step 3), and then enter the roller kiln and burn at 1200° C. for 55 minute...

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Abstract

The invention relates to a preparation method of a low-cost ultra-white porcelain tile. The preparation method comprises the following steps of (1) weighing materials, mixing the materials, adding water, a bonding agent and a dispersing agent, carrying out ball milling to prepare slurry, wherein sieving the slurry by 250 meshes with the weight percent of residues being less than 0.5%; carrying out ageing for 24-72 hours for spare use, wherein the materials comprise the following components by weight percent: 25-40% of kaolin, 40-50% of low-cost whitening mineral, 9-15% of feldspar and 6-11% of quartz sand, and the low-cost whitening mineral is mixture of black talc and diopside; (2) feeding the slurry into a spraying and drying tower to carry out spraying granulation so as to obtain body powder; (3) pressing the body powder to obtain a green body, feeding the green body into a drying kiln for drying so as to obtain the dried green body; and (4) applying transparent glaze on the dried green body, entering a roller kiln for firing so as to obtain the low-cost ultra-white porcelain tile. The preparation method has the advantages that the cost is lower, the prepared porcelain tile is high in whiteness and good in mechanical property and thermal stability property.

Description

technical field [0001] The invention belongs to the technical field of building materials and relates to a preparation method of low-cost ultra-white porcelain bricks. Background technique [0002] Ultra-white porcelain tiles are favored by consumers because of their light and elegant colors, bright and clean decorative effects, and pure meanings. At present, the ceramic industry generally uses ultra-fine alumina powder, high-grade calcined kaolin, ultra-white stone powder, zirconium silicate and rare element oxides to improve the whiteness of ceramic tiles. [0003] Japanese patent JPH06144691A discloses a kind of manufacture method of white ceramic brick, has used the superfine aluminum oxide powder (15~20%) that cost is higher; Raw materials such as ultra-white ball clay (18-25%) and calcined alumina (5-10%) have prepared polished tiles with a whiteness of 60-80; Chinese patent CN1915897A discloses an ultra-white polished tile. The ultra-white stone powder (55-75%) with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B33/24
Inventor 徐晓虹吴全发吴建锋李坤周炀
Owner WUHAN UNIV OF TECH
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