REVIEW ON EXTRACTION OF POTASSIUM FROM METALLURGICAL DUST-CONTAINING POTASSIUM

WANG Huigang; WU Long; QIU Guibo; HAO Yidang; ZHANG Fangbin; YANG Zengkui; JI Bowen; YUE Changsheng; PENG Ben

doi:10.13205/j.hjgc.202401016

Volume 42 Issue 1

Jan. 2024

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2024 > 42(1): 119-125

WANG Huigang, WU Long, QIU Guibo, HAO Yidang, ZHANG Fangbin, YANG Zengkui, JI Bowen, YUE Changsheng, PENG Ben. REVIEW ON EXTRACTION OF POTASSIUM FROM METALLURGICAL DUST-CONTAINING POTASSIUM[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(1): 119-125. doi: 10.13205/j.hjgc.202401016

Citation:

WANG Huigang, WU Long, QIU Guibo, HAO Yidang, ZHANG Fangbin, YANG Zengkui, JI Bowen, YUE Changsheng, PENG Ben. REVIEW ON EXTRACTION OF POTASSIUM FROM METALLURGICAL DUST-CONTAINING POTASSIUM[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(1): 119-125. doi: 10.13205/j.hjgc.202401016

Citation:

WANG Huigang, WU Long, QIU Guibo, HAO Yidang, ZHANG Fangbin, YANG Zengkui, JI Bowen, YUE Changsheng, PENG Ben. REVIEW ON EXTRACTION OF POTASSIUM FROM METALLURGICAL DUST-CONTAINING POTASSIUM[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(1): 119-125. doi: 10.13205/j.hjgc.202401016

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REVIEW ON EXTRACTION OF POTASSIUM FROM METALLURGICAL DUST-CONTAINING POTASSIUM

doi: 10.13205/j.hjgc.202401016

WANG Huigang^1,2,3,
WU Long^{1,2,3
,
,},
QIU Guibo^3,4,
HAO Yidang^1,2,3,
ZHANG Fangbin^3,4,
YANG Zengkui^3,4,
JI Bowen^3,4,
YUE Changsheng^1,2,3,
PENG Ben^1,2,3

1. State Key Laboratory of Iron and Steel Industry Environmental Protection, Beijing 100088, China;
2. Energy Conservation and Environment Protection Co., Ltd., MCC Group, Beijing 100088, China;
3. Central Research Institute of Building and Construction Co., Ltd., MCC Group, Beijing 100088, China;
4. Zhanjiang Environmental Protection Operation Management Co., Ltd., MCC Group, Zhanjiang 524000, China

Received Date: 2022-10-30
Available Online: 2024-04-29

Abstract

Abstract

The solid waste, such as sintering machine head ash generated by steel enterprises has a high potassium content. If it is directly returned as ironmaking raw materials for sintering and recycling without treatment, it will not only affect the quality of sintered ore, but also lead to problems such as an increase in coke ratio and obstruction in the blast furnace ironmaking process. At the same time, China's potassium ore reserves are insufficient, and the external dependence of potash is higher than 1/2. Given the above problems, this paper first introduces the treatment of iron and steel dust and the production and consumption status of potassium salt, and deeply analyzes the impact of potassium dust removal as sintering raw material on the ironmaking process. After that, the dust removal process of the rotary kiln and rotary hearth furnace is introduced, which also leads to the enrichment of potassium in the secondary zinc dust. Finally, based on the physical and chemical properties and the existing state of potassium-containing substances in the dust, the research progress of potassium extraction from the potassium-containing dust by two processes of “flotation gravity separation” and “water leaching-separation-purification-crystallization” is introduced. If the potassium-containing dust from the sintering process and the secondary zinc dust from the rotary hearth furnace are all recycled for KCl, it is expected to reduce the external dependence proportion of KCl in China by about 20%.

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References(26)

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