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A platform for research: civil engineering, architecture and urbanism
Method for preparing Portland cement from solid wastes
The invention relates to the field of waste recycling, in particular to a method for preparing Portland cement from solid waste, which comprises the following steps: 1) uniformly mixing 0.60-0.80 part by weight of white sludge or alkali white sludge, 0.050-0.07 part by weight of aluminum ash, 0.2-0.25 part by weight of tailing slag and 0.02-0.04 part by weight of iron correction raw material, sending the raw materials to a raw material mill through a batching machine and an electronic belt scale, and conducting grinding to form raw material powder with the water content of less than 1.5%; 2) homogenizing the raw material powder and then feeding the raw material powder into a rotary kiln for calcining; 3) cooling the calcined dry material balls through a cooling machine; and 4) after the dry material balls in the step 3) are cooled, adding 5.0-7.0% of gypsum and 15.0-29.0% of a mixed material into the cooled dry material balls, and feeding the mixture into a ball mill for grinding, so as to prepare the Portland cement. According to the preparation method disclosed by the invention, resources can be recycled, and the problem of life, property and ecology threats caused by long-term storage of wastes is also solved.
本发明涉及废弃物回收利用领域，尤其涉及一种利用固体废弃物制备硅酸盐水泥的方法，包括以下步骤1)按重量份数比将0.60～0.80份的白泥渣或碱白泥渣、0.050～0.07份的铝灰、0.2～0.25份尾矿渣、0.02～0.04铁质校正原料，经过配料机与电子皮带秤送到生料磨机粉磨制成水分小于1.5％生料粉2)将生料粉均化后送入回转窑煅烧3)将煅烧后的干料球通过冷却机冷却4)步骤3)中的干料球冷却完后，将冷却后的干料球加入5.0～7.0％的石膏，15.0～29.0％混合材送入球磨机进行粉磨，制得硅酸盐水泥。本发明所述的制备方法，既可以资源再利用，也解决废弃物长期堆存造成的生命、财产和生态威胁问题。
Method for preparing Portland cement from solid wastes
The invention relates to the field of waste recycling, in particular to a method for preparing Portland cement from solid waste, which comprises the following steps: 1) uniformly mixing 0.60-0.80 part by weight of white sludge or alkali white sludge, 0.050-0.07 part by weight of aluminum ash, 0.2-0.25 part by weight of tailing slag and 0.02-0.04 part by weight of iron correction raw material, sending the raw materials to a raw material mill through a batching machine and an electronic belt scale, and conducting grinding to form raw material powder with the water content of less than 1.5%; 2) homogenizing the raw material powder and then feeding the raw material powder into a rotary kiln for calcining; 3) cooling the calcined dry material balls through a cooling machine; and 4) after the dry material balls in the step 3) are cooled, adding 5.0-7.0% of gypsum and 15.0-29.0% of a mixed material into the cooled dry material balls, and feeding the mixture into a ball mill for grinding, so as to prepare the Portland cement. According to the preparation method disclosed by the invention, resources can be recycled, and the problem of life, property and ecology threats caused by long-term storage of wastes is also solved.
本发明涉及废弃物回收利用领域，尤其涉及一种利用固体废弃物制备硅酸盐水泥的方法，包括以下步骤1)按重量份数比将0.60～0.80份的白泥渣或碱白泥渣、0.050～0.07份的铝灰、0.2～0.25份尾矿渣、0.02～0.04铁质校正原料，经过配料机与电子皮带秤送到生料磨机粉磨制成水分小于1.5％生料粉2)将生料粉均化后送入回转窑煅烧3)将煅烧后的干料球通过冷却机冷却4)步骤3)中的干料球冷却完后，将冷却后的干料球加入5.0～7.0％的石膏，15.0～29.0％混合材送入球磨机进行粉磨，制得硅酸盐水泥。本发明所述的制备方法，既可以资源再利用，也解决废弃物长期堆存造成的生命、财产和生态威胁问题。
Method for preparing Portland cement from solid wastes
一种利用固体废弃物制备硅酸盐水泥的方法
LI SHENGDING (author) / ZHENG FAJI (author) / LI ZHENYOU (author) / LI ZHENQIU (author) / PENG QIYU (author) / XIAO JING (author) / XIONG LIBI (author) / WANG RUIXING (author)
2021-12-31
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Portland cement production using mineral wastes
| Elsevier | 1984
Method for preparing portland cement-based building material
| European Patent Office | 2015