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A platform for research: civil engineering, architecture and urbanism
Process for upgrading coal gangue machine-made sand
The invention discloses a process for upgrading coal gangue machine-made sand. The process comprises the following steps: step 1, firstly, making sand by adopting a dry grinding process, and decarburizing, so that the original carbon content in sand particles is reduced by more than 50%; step 2, washing and decarburizing the coal gangue machine-made sand prepared by a dry method, and dehydrating by adopting a washing and dehydrating screen after decarburizing and washing; and step 3, carrying out slurry wrapping treatment by utilizing dehydrated wet machine-made sand without dripping, and directly producing high-end concrete and products. The specific process for producing high-end concrete products after upgrading of the coal gangue machine-made sand is as follows: the carbon content of the coal gangue machine-made sand can be reduced to below 1%, surface mechanical damage and cracks of the coal gangue machine-made sand are repaired, micro-pores after decarburizing are filled, the content of stone flour lost due to elutriation of the machine-made sand is supplemented, and the quality of machine-made sand and even concrete is obviously improved. The vibration stirring can also help the mixture particles to enter and fill micro-pores after decarburizing of the coal gangue machine-made sand.
本发明公开了一种煤矸石机制砂提质工艺，包括如下步骤：步骤1：先采用干法磨制工艺制砂，脱碳，使得砂颗粒中的原含碳量降低50％以上；步骤2：干法制得的煤矸石机制砂进行洗涤脱碳，脱碳洗涤后采用过冲洗脱水筛进行脱水；步骤3：利用脱水后湿润但不滴水的机制砂进行裹浆处理，并直接生产高端混凝土及产品。针对性的煤矸石机制砂提质后生产高端混凝土产品的工艺如下，可使得煤矸石机制砂的含碳量降至1％以下，并修补煤矸石机制砂的表面机械损伤与裂纹、填充脱碳后的微孔、以及补充机制砂由于淘洗而损失的石粉含量，显著提高机制砂乃至混凝土的质量。振动搅拌还能有助于混合料颗粒进入与填补煤矸石机制砂脱碳后的微孔。
Process for upgrading coal gangue machine-made sand
The invention discloses a process for upgrading coal gangue machine-made sand. The process comprises the following steps: step 1, firstly, making sand by adopting a dry grinding process, and decarburizing, so that the original carbon content in sand particles is reduced by more than 50%; step 2, washing and decarburizing the coal gangue machine-made sand prepared by a dry method, and dehydrating by adopting a washing and dehydrating screen after decarburizing and washing; and step 3, carrying out slurry wrapping treatment by utilizing dehydrated wet machine-made sand without dripping, and directly producing high-end concrete and products. The specific process for producing high-end concrete products after upgrading of the coal gangue machine-made sand is as follows: the carbon content of the coal gangue machine-made sand can be reduced to below 1%, surface mechanical damage and cracks of the coal gangue machine-made sand are repaired, micro-pores after decarburizing are filled, the content of stone flour lost due to elutriation of the machine-made sand is supplemented, and the quality of machine-made sand and even concrete is obviously improved. The vibration stirring can also help the mixture particles to enter and fill micro-pores after decarburizing of the coal gangue machine-made sand.
本发明公开了一种煤矸石机制砂提质工艺，包括如下步骤：步骤1：先采用干法磨制工艺制砂，脱碳，使得砂颗粒中的原含碳量降低50％以上；步骤2：干法制得的煤矸石机制砂进行洗涤脱碳，脱碳洗涤后采用过冲洗脱水筛进行脱水；步骤3：利用脱水后湿润但不滴水的机制砂进行裹浆处理，并直接生产高端混凝土及产品。针对性的煤矸石机制砂提质后生产高端混凝土产品的工艺如下，可使得煤矸石机制砂的含碳量降至1％以下，并修补煤矸石机制砂的表面机械损伤与裂纹、填充脱碳后的微孔、以及补充机制砂由于淘洗而损失的石粉含量，显著提高机制砂乃至混凝土的质量。振动搅拌还能有助于混合料颗粒进入与填补煤矸石机制砂脱碳后的微孔。
Process for upgrading coal gangue machine-made sand
一种煤矸石机制砂提质工艺
TANG MIN (author) / WANG QINGYAO (author) / LI XUEJUN (author)
2022-02-08
Patent
Electronic Resource
Chinese
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