Treatment chemical for lead-zinc flotation tailing wastewater

A wastewater treatment and flotation tailings technology, which is applied in mining wastewater treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of poor technical and economic operability, high treatment cost, single drug effect, etc., and achieve the removal of precipitated heavy metals Ion, less dosage, low price effect

Inactive Publication Date: 2012-06-20
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the existing lead-zinc beneficiation plant wastewater treatment agents of many types, single drug effect, high treatment cost, complicated process, and poor technical and economic operability, the present invention provides a new type of lead-zinc flotation tailings wastewater treatment agent

Method used

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  • Treatment chemical for lead-zinc flotation tailing wastewater
  • Treatment chemical for lead-zinc flotation tailing wastewater
  • Treatment chemical for lead-zinc flotation tailing wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0015] Example 1: The composition and weight percentage of this lead-zinc flotation tailings wastewater treatment agent are: 90% ammonium bicarbonate, 9% sodium phosphate, and 1% non-ionic polyacrylamide.

[0016] When in use, mix 90% of ammonium bicarbonate, 9% of sodium phosphate and 1% of non-ionic polyacrylamide according to the weight percentage, mix and stir evenly, add water to prepare a concentration of 2%, and put it into the treatment agent storage tank 1 for standby.

[0017] exist figure 1 Among them, the lead-zinc flotation plant tailings wastewater containing high calcium, high pH, ​​and high heavy metal ions first enters the tailings pond for clarification, and the clarified water from the tailings pond is pumped to the No. Under the condition of high pressure, add 700 mg / L of the treatment agent with a concentration of 2%, and stir for 5 minutes, so that the chemical reaction with the free calcium oxide and heavy metal ions in the wastewater can fully occur...

Embodiment 2

[0021] Example 2: The composition and weight percentage of the lead-zinc flotation tailings wastewater treatment agent are: 80% sodium bicarbonate, 19% sodium tripolyphosphate, and 1% non-ionic polyacrylamide.

[0022] When in use, mix 80% sodium bicarbonate, 19% sodium tripolyphosphate and 1% non-ionic polyacrylamide according to the weight percentage, mix and stir evenly, add water to prepare a concentration of 5%, and put it into the treatment agent storage tank for later use.

[0023] Lead-zinc flotation plant tailings wastewater containing high calcium, high pH, ​​and high heavy metal ions first enters the tailings pond for clarification, and the clarified water from the tailings pond is pumped to the No. Next, add 450 mg / L of the treatment agent with a concentration of 5%, and stir for 10 minutes, so that the chemical reaction with the free calcium oxide and heavy metal ions in the wastewater can fully occur in the No. 1 mixing tank to form a precipitate. At the same...

Embodiment 3

[0027] Example 3: The composition and weight percentage of the lead-zinc flotation tailings wastewater treatment agent are: 85% ammonium carbonate, 14.2% sodium dihydrogen phosphate, and 0.8% non-ionic polyacrylamide.

[0028] When using, mix 85% of ammonium carbonate, 14.2% of sodium dihydrogen phosphate and 0.8% of non-ionic polyacrylamide according to the weight percentage, mix and stir evenly, add water to prepare a concentration of 4%, and put it into the treatment agent storage tank for standby.

[0029] Lead-zinc flotation plant tailings wastewater containing high calcium, high pH, ​​and high heavy metal ions first enters the tailings pond for clarification, and the clarified water from the tailings pond is pumped to the No. Next, add 600 mg / L of the treatment agent with a concentration of 3%, and stir for 8 minutes, so that the chemical reaction between the agent and free calcium oxide and heavy metal ions in the wastewater can fully occur in the No. 1 mixing tank to fo...

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Abstract

The invention discloses a treatment chemical for lead-zinc flotation tailing wastewater, wherein the chemical comprises, in percentage by weight, 80-90% of carbonate, 9-19% of phosphate and 0.5-1% of non-ionic polyacrylamide; and the treatment chemical is suitable for treating lead-zinc flotation tailing wastewater with suspended solids, highly-free calcium oxide, high pH, high-concentration heavy metal ions, and over-standard COD (chemical oxygen demand) and BOD (biochemical oxygen demand). The new chemical has the multi-functions of rapidly removing calcium, removing suspended matters and precipitates, i.e., heavy metal ions and the like, as well as is large in the particle size of precipitate particles and complete in precipitation. Moreover, operation is simple and cost is low by using the chemical.

Description

technical field [0001] The invention relates to a lead-zinc flotation tailings wastewater treatment agent, which belongs to the technical field of mineral processing. Background technique [0002] The world's lead-zinc resources are relatively rich, and lead-zinc ores can be divided into sulfide ores, mixed ores and oxidized ores according to the degree of oxidation. Among the lead-zinc ores in my country and the world, sulfide lead-zinc ores and mixed ores account for the vast majority, and sulfide lead-zinc ores The beneficiation method of mixed ore is mainly flotation method. A large amount of new water is consumed in the process of lead-zinc flotation. In order to effectively separate useful metals, a large amount of flotation agents need to be added to different operations. Collectors, foaming agents, organic and inorganic activators, inhibitors, dispersants, etc. These agents are mainly adsorbed in the concentrate, and other residual agents are transported to the tailing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C02F103/10
Inventor 刘四清刘方舟童雄高峰
Owner KUNMING UNIV OF SCI & TECH
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