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A kind of method for comprehensive utilization of electrolytic manganese slag resources

A technology of electrolytic manganese slag and resources, which is applied in the direction of solid separation and flotation, which can solve the problems of not considering the influence of flotation, low grade of gypsum concentrate, and difficult realization of flotation production, so as to improve the economic benefits of enterprises , large scale of treatment and low cost of medicine

Active Publication Date: 2022-04-29
CHANGSHA DESIGN & RES INST OF CHEM IND MIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention has a good internal circulation, but the process is long, and it is not easy to co-produce successfully. In addition, the flotation process using sodium silicate to suppress quartz and anion collectors to collect gypsum in the complex system of manganese slag is not effective, and the grade of gypsum concentrate is not high. , and did not take into account the impact of organic matter in manganese slag on flotation, flotation production is not easy to achieve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The cationic collector used in embodiment 1 is the industrial grade dodecylamine sold on the market, and the cationic collector used in Examples 2 and 3 is the CJ-1 collector produced by Zhonglan Changhua Engineering Technology Co., Ltd., CJ- 1 The collector is a compound agent of short-chain fatty amine and surfactant.

[0030] Unless otherwise specified, the following percentages all represent mass percentages.

[0031] Example 1

[0032] (1) Slurry mixing: An electrolytic manganese slag contains gypsum, quartz, muscovite, pyrite, manganese sulfate, organic matter and ammonia nitrogen compounds. The chemical composition includes: CaO 11.07%, SiO 2 30.54%, Fe 2 o 3 3.26%, Al 2 o 3 4.58%, SO 4 2- 27.83%, MnO 2 2.33%, LOI (loss on ignition) 18.06%; weigh 100.0 kg of the above electrolytic manganese slag and 300.0 kg of tap water to mix and mix in batches, and stir in the flotation tank for 5 minutes;

[0033] (2) Structural flotation environment: add surfacta...

Embodiment 2

[0039] (1) Slurry mixing: An electrolytic manganese slag contains gypsum, quartz, muscovite, pyrite, manganese sulfate, organic matter and ammonia nitrogen compounds. The chemical composition includes: CaO 12.64%, SiO 2 21.63%, Fe 2 o 3 5.05%, Al 2 o 3 4.93%, SO 3 22.60%, MnO 2 4.30%, K 2 O 2.79%, LOI 13.86%; weigh 100.0 kg of the above electrolytic manganese slag and 400.0 kg of tap water to mix in batches, and stir in the flotation tank for 3 minutes;

[0040] (2) Structural flotation environment: add surfactant terpineol oil 80.0g / t raw ore, stir for 2 minutes, and carry out pre-flotation separation of organic matter to obtain foam and pulp; the obtained foam is left to be combined with the tailings in step (4) Perform solid-liquid separation. The slurry system in the flotation tank is a structured flotation environment, waiting for the next step;

[0041] (3) Adjust the pH value of the pulp and restructure the surface properties of the minerals: add dilute sulfu...

Embodiment 3

[0046] (1) Slurry mixing: An electrolytic manganese slag contains gypsum, quartz, muscovite, pyrite, manganese sulfate, organic matter and ammonia nitrogen compounds. The chemical composition includes: CaO 15.77%, SiO 2 23.96%, Fe 2 o 3 5.24%, Al 2 o 3 6.21%, SO 3 21.23%, MnO 2 4.21%, K 2 O 1.39%, LOI 13.11%; Weigh 100.0 kg of the above electrolytic manganese slag and 250.0 kg of tap water to mix in batches, and stir in the flotation tank for 5 minutes;

[0047] (2) Structural flotation environment: add surfactant terpineol oil 70.0g / t raw ore, stir for 2 minutes, and carry out pre-flotation separation of organic matter to obtain foam and pulp; the obtained foam is left to be combined with the tailings in step (4) Perform solid-liquid separation. The slurry system in the flotation tank is a structured flotation environment, waiting for the next step;

[0048] (3) Adjust the pH value of the pulp and restructure the surface properties of the minerals: add dilute sulfur...

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Abstract

A method for comprehensive utilization of electrolytic manganese slag resources: adding electrolytic manganese slag and water into a flotation cell, stirring evenly, to obtain flotation pulp; adding surfactant to the obtained flotation pulp, pre-flotation separation, to obtain foam and pulp , the resulting foam enters the tailings pond; the pH value adjuster is used to adjust the slurry until it is acidic; the closed-circuit flotation is used to add cationic collectors, three-stage selection, and selected middle ore to return to the upper-level operation in the order of rough separation. The concentrate foam and tailings slurry are obtained; the obtained concentrate foam is processed to obtain a white gypsum product; the obtained tailings slurry is further processed for making unburned bricks or cement clinker. The invention realizes the high-efficiency separation of gypsum and quartz and other gangues, and produces high-quality anhydrous gypsum products with a purity of more than 95%; the tailings after flotation are fully utilized; The large scale not only brings economic benefits to the enterprise but also effectively relieves the environmental protection pressure of the enterprise.

Description

technical field [0001] The invention relates to a method for comprehensive utilization of solid waste, in particular to a processing method for comprehensive utilization of electrolytic manganese slag. Background technique [0002] Electrolytic manganese slag is the filter residue produced in the process of producing manganese metal by electrolysis with manganese carbonate ore as raw material, and its discharge volume is quite large. According to relevant statistics and reports, the manganese slag discharged per 1 ton of electrolytic manganese powder is about 6-7t. At present, there are 120-130 million tons of electrolytic manganese slag stored in the open air in my country, and about 10 million tons are newly discharged every year. At present, most electrolytic manganese enterprises in my country adopt the disposal method of slag storage for electrolytic manganese slag. These manganese slag particles are small and contain a certain amount of harmful elements. The leachate wa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/018B03D1/02B03D101/00B03D101/02B03D103/02
CPCB03D1/018B03D1/02B03D2201/00B03D2201/007B03D2201/02B03D2203/02
Inventor 蒋世鹏甘顺鹏艾自强季荣胡勇余俊谢超郑贤福罗稳杨清
Owner CHANGSHA DESIGN & RES INST OF CHEM IND MIN
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