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Manufacturing method for waste industrial molding sand dust ceramsite
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A manufacturing method and dust technology, applied in the field of building materials manufacturing, can solve problems such as land occupation, difficulty in using waste industrial sand and dust, and environmental pollution
Inactive Publication Date: 2013-07-24
齐齐哈尔中齐建材开发有限公司
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[0003] Since the reform and opening up, my country's foundry industry has developed by leaps and bounds. Hundreds of large and medium-sized foundry companies across the country discharge tens of millions of tons of waste industrial sand every year, and most of them have been disposed of in landfills. A large area of land also pollutes the environment
Therefore, some enterprises carry out resource treatment on it, and make it achieve the purpose of circular economy through magnetic separation, sorting, drying, screening and dedusting treatment. However, how to use the waste industrial sand dust obtained in dedusting treatment But it is a difficult problem, and there is almost a blank in this area in China
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Embodiment 1
[0024] Weight ratio: copper tailings powder 90%;
[0025] Coal powder 10%;
[0026] Manufacturing process:
[0027] 1. Send the waste industrial sand dust into the powder silo;
[0029] 3. Put the measured two kinds of materials into the blender, first dry stir for about 2 minutes, then add 1 / 2 of water, and then wet stir for about 1 minute;
[0030] 4. Send the stirred wet mixed powder into the ball forming plate, add 1 / 2 of water, and rotate into balls;
[0031] 5. Put the waste industrial sand dust ceramsite raw meal balls into the static continuous sintering kiln for roasting, the sintering temperature is 1220℃~1350℃, the sintering time is 2.0~2.6 hours, the waste industrial sand dust ceramsite raw meal balls are in the sintering kiln , through the three process stages of preheating, sintering and cooling in turn, and cooling to below 400 °C in the kiln;
[0032] 6. Out of kiln, natural cooling...
Embodiment 2
[0035] Weight ratio: copper tailings powder 92%;
[0036] Coal powder 8%;
[0037] Manufacturing process:
[0038] 1. Send the waste industrial sand dust into the powder silo;
[0040] 3. Put the measured two kinds of materials into the blender, first dry stir for about 2 minutes, then add 1 / 2 of water, and then wet stir for about 1 minute;
[0041] 4. Send the stirred wet mixed powder into the ball forming plate, add 1 / 2 of water, and rotate into balls;
[0042] 5. Put the waste industrial sand dust ceramsite raw meal balls into the static continuous sintering kiln for roasting, the sintering temperature is 1220℃~1350℃, the sintering time is 2.0~2.6 hours, the waste industrial sand dust ceramsite raw meal balls are in the sintering kiln , through the three process stages of preheating, sintering and cooling in turn, and cooling to below 400 °C in the kiln;
[0043] 6. Out of kiln, natural cooling;...
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Abstract
The invention relates to a manufacturing method for waste industrial molding sand dust ceramsite. The manufacturing method comprises material proportioning and manufacturing process flow, wherein the material proportioning is as follows: 90-92% of waste industrial molding sand dust and 8-10% of coal powder; and the process flow is as follows: respectively measuring the waste industrial molding sand dust and the coal powder; after conveying the waste industrial molding sand dust and the coal powder to a stirring machine, drily stirring for about 2 min, adding 1 / 2 water, and wetly stirring for 1 min; conveying the stirred wet powder into a ball pelletizing disk, and adding water to form a ball; placing the ceramsite raw material ball in a static continuous sintering kiln for calcination; preheating, sintering and cooling; and discharging from the kiln, cooling, smashing and separating to obtain the waste industrial molding sand dust ceramsite as a finished product. The waste industrial molding sand dust ceramsite has the advantages of high utilization rate and high strength.
Description
technical field [0001] The invention relates to the technical field of building material manufacturing, in particular to a method for manufacturing waste industrial sand dust ceramsite by using waste industrial sand dust in industrial waste slag as a main raw material and coal powder as a secondary raw material. Background technique [0002] In the 1950s, Britain was the first in the world to produce fly ash ceramsite by using industrial waste slag - fly ash. my country built two production lines for sintered fly ash ceramsite in Tianjin Silicate Products Factory and Lanzhou in 1964, and reached a production climax in the 1970s and 1980s. It's at a standstill for a number of reasons. Until the 1990s, the upsurge of comprehensive utilization of fly ash was set off again. my country is a large coal-producing country and a large coal-fired power generation country. Various industries and the northern region also consume a large proportion of coal for heating and central heatin...
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