Method for preparing ceramic tiles from calcium silicate slag
A technology of silicon-calcium slag and ceramic bricks, which is applied in the field of comprehensive utilization of solid waste resources, can solve the problems of difficult standardization of sintering temperature system, difficult control of product quality and performance, and increased difficulty and efficiency of iron removal, so as to save raw materials The effect of iron removal, reduction of crushing and ball milling time, reduction of energy consumption and cost
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example 1
[0031] According to the recipe requirements, the weight percentage of each raw material is: 60% calcium silicate slag, 15% clay, 10% pyrophyllite, 15% quartz, add 0.3% sodium tripolyphosphate, 0.1% carboxymethyl Sodium cellulose. After mixing the materials, mix them with water in a certain ratio and put them into a ball mill for ball milling to make a slurry that passes through a 250-mesh sieve and then dry it. Add water to the dried slurry and granulate it to press it into a green body. After drying, the water content of the green body is less than 0.1 %, into the roller kiln firing temperature at 1160 ℃. After firing, the weight loss rate of the sample is about 18%, the flexural strength is 43MPa, and the water absorption rate is <0.9%. It is a kind of building ceramic material with good performance.
example 2
[0033] According to the recipe requirements, the weight percentage of each raw material is: 50% of calcium silicate slag, 20% of clay, 10% of pyrophyllite, 20% of quartz, and 0.3% of sodium tripolyphosphate and 0.1% of carboxymethyl Sodium cellulose. After mixing the materials, mix them with water in a certain ratio and put them into a ball mill for ball milling to make a slurry that passes through a 250-mesh sieve and then dry it. Add water to the dried slurry and granulate it to press it into a green body. After drying, the water content of the green body is less than 0.1 %, into the roller kiln firing temperature at 1160 ℃. After firing, the weight loss rate of the sample is about 16%, the flexural strength is 63MPa, and the water absorption rate is less than 0.3%. It is a kind of building ceramic material with good performance.
example 3
[0035] According to the recipe requirements, the weight percentage of each raw material is: 50% of silicon-calcium slag, 15% of clay, 6% of feldspar, 5% of pyrophyllite, 20% of quartz, and 5% of talc. Sodium polyphosphate, 0.1% sodium carboxymethylcellulose. After mixing the materials, mix them with water in a certain ratio and put them into a ball mill for ball milling to make a slurry that passes through a 250-mesh sieve and then dry it. Add water to the dried slurry and granulate it to press it into a green body. After drying, the water content of the green body is less than 0.1 %, into the roller kiln firing temperature at 1155 ℃. After firing, the weight loss rate of the sample is about 16%, the flexural strength is 72MPa, and the water absorption rate is less than 0.1%. It is a kind of building ceramic material with good performance.
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