A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a process for producing calcium sulfate by using waste sulfuric acid. The process comprises the steps of raw material extraction and treatment, raw material cleaning, drying and dehydration, waste sulfuric acid impurity removal, decoloration and dilution, calcium sulfate preparation, slurry filtration and drying and the like. The method is simple in technological process and reasonable in formula control, the prepared calcium sulfate finished product is high in quality and can reach the use standard of cement manufacturing through professional treatment, desulfurized gypsum can be replaced, the gypsum purchasing cost of a cement plant can be greatly reduced, a waste acid digestion channel is newly added, the waste acid treatment amount is increased, the treatment income is increased, the problem that the waste acid treatment capacity is reversely restricted due to the fact that products formed by waste acid treatment cannot be sold is solved, the problem that synthetic product calcium sulfate goes to the destination is effectively solved through the synthetic reaction with waste acid treatment as the purpose, economic benefits brought by waste acid treatmentqualification are fully released, cyclic utilization can be achieved, waste is turned into wealth, and thus win-win of three parties is realized.
本发明公开了一种用废硫酸生产硫酸钙的工艺，该工艺包括原料提取与处理、原料清洗、烘干脱水、废硫酸除杂脱色与稀释、硫酸钙制取和浆液过滤与烘干等步骤。本发明工艺流程简单，配方控制合理，制得的硫酸钙成品质量高，通过专业处理，能够达到水泥制造的使用标准，不仅可替代脱硫石膏，还可大幅降低水泥厂的石膏采购成本，通过新增一项废酸消化渠道，扩大了废酸处置量，增加了处置收益，解决了由于处置废酸形成的产物无法销售导致反向制约废酸处置能力发挥的问题，通过以处置废酸为目的的合成反应，有效解决了合成产物硫酸钙的去向，从而充分释放了废酸处置资质带来的经济效益，并且可循环利用，变废为宝，从而实现三方共赢。
The invention discloses a process for producing calcium sulfate by using waste sulfuric acid. The process comprises the steps of raw material extraction and treatment, raw material cleaning, drying and dehydration, waste sulfuric acid impurity removal, decoloration and dilution, calcium sulfate preparation, slurry filtration and drying and the like. The method is simple in technological process and reasonable in formula control, the prepared calcium sulfate finished product is high in quality and can reach the use standard of cement manufacturing through professional treatment, desulfurized gypsum can be replaced, the gypsum purchasing cost of a cement plant can be greatly reduced, a waste acid digestion channel is newly added, the waste acid treatment amount is increased, the treatment income is increased, the problem that the waste acid treatment capacity is reversely restricted due to the fact that products formed by waste acid treatment cannot be sold is solved, the problem that synthetic product calcium sulfate goes to the destination is effectively solved through the synthetic reaction with waste acid treatment as the purpose, economic benefits brought by waste acid treatmentqualification are fully released, cyclic utilization can be achieved, waste is turned into wealth, and thus win-win of three parties is realized.
本发明公开了一种用废硫酸生产硫酸钙的工艺，该工艺包括原料提取与处理、原料清洗、烘干脱水、废硫酸除杂脱色与稀释、硫酸钙制取和浆液过滤与烘干等步骤。本发明工艺流程简单，配方控制合理，制得的硫酸钙成品质量高，通过专业处理，能够达到水泥制造的使用标准，不仅可替代脱硫石膏，还可大幅降低水泥厂的石膏采购成本，通过新增一项废酸消化渠道，扩大了废酸处置量，增加了处置收益，解决了由于处置废酸形成的产物无法销售导致反向制约废酸处置能力发挥的问题，通过以处置废酸为目的的合成反应，有效解决了合成产物硫酸钙的去向，从而充分释放了废酸处置资质带来的经济效益，并且可循环利用，变废为宝，从而实现三方共赢。
Process for producing calcium sulfate by using waste sulfuric acid
一种用废硫酸生产硫酸钙的工艺
REN JIE (author)
2021-02-26
Patent
Electronic Resource
Chinese
| European Patent Office | 2025
| Taylor & Francis Verlag | 2001
| European Patent Office | 2020