利用干法半干法烟气脱硫灰热分解钾长石的实验研究

石林; 曾小平; 柯亮

环境工程学报

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石林, 曾小平, 柯亮. 利用干法半干法烟气脱硫灰热分解钾长石的实验研究[J]. 环境工程学报, 2008, 2(4): 517-521.

引用本文:

石林, 曾小平, 柯亮. 利用干法半干法烟气脱硫灰热分解钾长石的实验研究[J]. 环境工程学报, 2008, 2(4): 517-521.

Shi Lin, Zeng Xiaoping, Ke Liang. Experimental study on K-feldspar decomposedby dry and semidry FGD residue at high temperature[J]. Chinese Journal of Environmental Engineering, 2008, 2(4): 517-521.

Citation:

Shi Lin, Zeng Xiaoping, Ke Liang. Experimental study on K-feldspar decomposedby dry and semidry FGD residue at high temperature[J]. Chinese Journal of Environmental Engineering, 2008, 2(4): 517-521.

利用干法半干法烟气脱硫灰热分解钾长石的实验研究

1.
华南理工大学环境科学与工程学院，广州 510641
基金项目:
国家星火计划（2006EA105017）

广州市污染防治新技术新工艺研究开发项目资助（200603）
中图分类号: TQ443

Experimental study on K-feldspar decomposedby dry and semidry FGD residue at high temperature

1.
College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510641
Fund Project:

摘要: 探讨了目前干法半干法脱硫灰综合利用当中存在的诸多问题。提出了利用该类灰渣热分解钾长石矿，生产以钾、钙、硅和镁为主的土壤营养调节剂。并对最佳的物料配比、焙烧条件和助剂的种类及含量进行了实验研究，利用广州恒运集团公司产出的脱硫灰，在1 050 ℃下焙烧2 h，使烧成物在酸性条件下最大可溶K2O达6.49%、有效CaO达32.28%、SiO2达13.83%、MgO达1.68%。烧成物料的pH值为9.6，是一种安全、适用于偏酸性土壤使用的复合元素土壤营养调节剂。
- 脱硫灰 /
- 钾长石 /
- 焙烧 /
- 土壤营养调节剂
Abstract: The existing problems about dry and semidry FGD residue utilization were discussed in this paper. A new type of treatment technique was suggested, that was: mixing FGD residue with K-feldspar in a suitable ratio to calcine at the high temperature and produce soil nourishment amendment which was constituted of soluble potassium, calcium, silicon and magnesium. The optimum material ratio, reaction conditions and varieties of active agents and these contents were determined on the experiment. When baked temperature was controlled at 1 050 ℃, reaction time was 2 hours, the highest concentrations of soluble K2O, CaO, SiO2 and MgO in cacined products were 6.49%,32.28%, 13.83% and 1.68% in acidic conditions respectively. The pH value of cacined products was about 9.6. It would be safe and highquality soil amendment, in particular, for acidic soils.
- FGD residue /
- K-feldspar /
- calcination /
- soil nourishment amendment

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石林, 曾小平, 柯亮. 利用干法半干法烟气脱硫灰热分解钾长石的实验研究[J]. 环境工程学报, 2008, 2(4): 517-521.

引用本文:

石林, 曾小平, 柯亮. 利用干法半干法烟气脱硫灰热分解钾长石的实验研究[J]. 环境工程学报, 2008, 2(4): 517-521.

Shi Lin, Zeng Xiaoping, Ke Liang. Experimental study on K-feldspar decomposedby dry and semidry FGD residue at high temperature[J]. Chinese Journal of Environmental Engineering, 2008, 2(4): 517-521.

Citation:

利用干法半干法烟气脱硫灰热分解钾长石的实验研究

1. 华南理工大学环境科学与工程学院，广州 510641

收稿日期: 2007-11-10

基金项目:

国家星火计划（2006EA105017）

广州市污染防治新技术新工艺研究开发项目资助（200603）

关键词:

摘要: 探讨了目前干法半干法脱硫灰综合利用当中存在的诸多问题。提出了利用该类灰渣热分解钾长石矿，生产以钾、钙、硅和镁为主的土壤营养调节剂。并对最佳的物料配比、焙烧条件和助剂的种类及含量进行了实验研究，利用广州恒运集团公司产出的脱硫灰，在1 050 ℃下焙烧2 h，使烧成物在酸性条件下最大可溶K2O达6.49%、有效CaO达32.28%、SiO2达13.83%、MgO达1.68%。烧成物料的pH值为9.6，是一种安全、适用于偏酸性土壤使用的复合元素土壤营养调节剂。

English Abstract

Experimental study on K-feldspar decomposedby dry and semidry FGD residue at high temperature

1. College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510641

Received Date: 2007-11-10

Fund Project:

Keywords:

Abstract: The existing problems about dry and semidry FGD residue utilization were discussed in this paper. A new type of treatment technique was suggested, that was: mixing FGD residue with K-feldspar in a suitable ratio to calcine at the high temperature and produce soil nourishment amendment which was constituted of soluble potassium, calcium, silicon and magnesium. The optimum material ratio, reaction conditions and varieties of active agents and these contents were determined on the experiment. When baked temperature was controlled at 1 050 ℃, reaction time was 2 hours, the highest concentrations of soluble K2O, CaO, SiO2 and MgO in cacined products were 6.49%,32.28%, 13.83% and 1.68% in acidic conditions respectively. The pH value of cacined products was about 9.6. It would be safe and highquality soil amendment, in particular, for acidic soils.

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利用干法半干法烟气脱硫灰热分解钾长石的实验研究

Experimental study on K-feldspar decomposedby dry and semidry FGD residue at high temperature

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利用干法半干法烟气脱硫灰热分解钾长石的实验研究

English Abstract

Experimental study on K-feldspar decomposedby dry and semidry FGD residue at high temperature

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