Metallurgical wastewater flocculant

Abstract

The invention provides a metallurgical wastewater flocculant which comprises the following ingredients in parts by mass: 15-26 parts of polyacrylamide, 10-18 parts of polyacrylate, 7-10 parts of aluminum potassium sulfate, 2-5 parts of natural organic acid and 5-12 parts of polysilicate. According to the metallurgical wastewater flocculant, the natural organic acid is one of oxalic acid, fulvic acid, tannic acid and tartaric acid, and the polysilicate is polysilicate aluminum or polysilicate ferrite.

Description

technical field [0001] The invention belongs to the field of water treatment agents, in particular to a flocculant, in particular to a flocculant used for metallurgical washing wastewater. Background technique [0002] The dedusting wastewater and gas and flue gas washing water of metallurgical plants are mainly blast furnace gas washing water, open hearth furnace and converter flue gas washing water, dust removal wastewater in sintering and coking processes, nonferrous metallurgical furnace flue gas washing water, etc. The common feature of this type of wastewater is that it contains a large amount of suspended matter, the water quality changes greatly, and the water temperature is high. For every ton of molten iron produced, 2 to 4 meters of blast furnace gas washing wastewater must be discharged. The water temperature is generally above 30°C, and the suspended matter content is 600 to 3,000 mg / liter, mainly iron ore, coke powder and some oxides. Wastewater also contains ...

AI Technical Summary

Problems solved by technology

Due to the small particles and the thermal convection of water, usually the effect of coagulation and sedimentation alone is not good, so it is necessary to add polymer flocculants

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