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Manganese ore industrialization wet ball milling method based on electrolytic manganese metal system backwater

A technology of electrolytic manganese metal and wet ball milling, applied in grain processing and other directions, can solve the problems of high production cost and complex processing, and achieve the effects of reducing manganese ore loss, avoiding dust pollution and improving qualification rate

Active Publication Date: 2020-05-08
TONGREN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application only selects a kind of washing water from the return water of the electrolytic manganese system as the wet grinding agent, and the application also needs to treat the manganese-containing washing water to be neutral before it can be used as the wet grinding agent, which is complicated to deal with and causes high production costs.

Method used

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  • Manganese ore industrialization wet ball milling method based on electrolytic manganese metal system backwater
  • Manganese ore industrialization wet ball milling method based on electrolytic manganese metal system backwater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, the industrialized wet ball milling method of manganese ore based on the return water of the electrolytic metal manganese system adopts three-stage closed-circuit wet grinding, and the specific steps include:

[0023] Step 1, 1kg manganese ore (including the following mass percentage components: Mn18.32% (main phase is MnCO 3 ), Fe 2 o 3 2.84%, MgO5.12%, CaO4.9% and SiO 2 25.2% etc.) to less than 10mm, and then use passivation chromium removal wastewater (pH of passivation chromium removal wastewater is 5.7, total chromium content is less than 1.5mg / L, Mn 2+ 102mg / L) to 75wt%, under the conditions of rotating speed 30r / min and ball-to-material ratio 10:1, wet ball milling until the manganese ore particle size is below 80 mesh accounts for 90%, and the unqualified manganese ore after primary classification is returned to One-time wet ball milling;

[0024] Step 2, the manganese ore below 80 orders that step 1 obtains adopts deammonization ...

Embodiment 2

[0027] Such as figure 1 As shown, the industrialized wet ball milling method of manganese ore based on the return water of the electrolytic metal manganese system adopts three-stage closed-circuit wet grinding, and the specific steps include:

[0028] Step 1, 1kg manganese ore (including the following mass percentage components: Mn19.4% (main phase is MnCO 3 ), Fe 2 o 3 3.67%, MgO2.22%, CaO3.8% and SiO 2 26.4% etc.) broken to less than 25mm, and then use passivation chromium removal wastewater (pH of passivation chromium removal wastewater is 6.5, total chromium content is less than 1.5mg / L, Mn 2+ 1890mg / L) to 85wt%, at a rotational speed of 60r / min and a ball-to-material ratio of 20:1, wet ball milling until the particle size of the manganese ore is below 80 mesh accounts for 90%, and the unqualified manganese ore after the primary classification is returned to the One-time wet ball milling;

[0029] Step 2, the manganese ore below 80 orders that step 1 obtains adopts de...

Embodiment 3

[0032] Such as figure 1 As shown, the industrialized wet ball milling method of manganese ore based on the return water of the electrolytic manganese system adopts three-stage closed-circuit wet grinding, and the specific steps include:

[0033] Step 1, 1kg manganese ore (including the following mass percentage components: Mn20.1% (main phase is MnCO 3 ), Fe 2 o 3 2.67%, MgO4.32%, CaO6.1% and SiO 225.4% etc.) broken to less than 15mm, and then use passivation chromium removal wastewater (pH of passivation chromium removal wastewater is 6.6, total chromium content is less than 1.5mg / L, Mn 2+ 998mg / L) to 80wt%, at a rotational speed of 50r / min and a ball-to-material ratio of 18:1, wet ball milling until the particle size of the manganese ore is below 80 mesh accounts for 90%, and the unqualified manganese ore after the primary classification is returned to the One-time wet ball milling;

[0034] Step 2, the manganese ore below 80 orders that step 1 obtains adopts deammoniza...

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Abstract

The invention relates to a manganese ore industrialization wet ball milling method based on electrolytic manganese metal system backwater, and belongs to the technical field of electrolytic manganeseproduction. The method comprises the following steps that manganese ore is crushed to be less than 10 mm-25 mm, slurry mixing is carried out by adopting passivated chromium removal wastewater, primarywet ball milling is carried out until the manganese ore with the particle size being 80 meshes or below accounts for 90%, and the unqualified manganese ore subjected to primary grading returns to besubjected to primary wet ball milling; the obtained manganese ore with the particle size being 80 meshes or below is subjected to the slurry mixing by adopting ammonia-nitrogen removal manganese slagleachate wastewater, secondary wet ball milling is carried out until the manganese ore with the particle size being 100 meshes or below accounts for 80%, and the unqualified manganese ore subjected tosecondary grading returns to be subjected to secondary wet ball milling; and the obtained manganese ore with the particle size being 100 meshes or below is subjected to slurry mixing by adopting mixed water composed of the passivated chromium removal wastewater and the ammonia-nitrogen removal manganese slag leachate wastewater, third-time wet ball milling is carried out until the manganese ore with the particle size being 150 meshes or below account for 85%, and the manganese ore with the particle size being 150 meshes or below is qualified manganese ore powder. According to the manganese ore industrial wet ball milling method, the electrolytic manganese metal system backwater is applied to a manganese ore wet ball milling process, and the electrolytic manganese metal system backwater isfurther recycled.

Description

technical field [0001] The invention relates to an industrialized wet ball milling method for manganese ore based on the return water of an electrolytic manganese system, and belongs to the technical field of electrolytic manganese production. Background technique [0002] The industrial production methods of manganese metal mainly include fire method and electrolysis method. The purity of manganese metal produced by fire method is low (95-98%), which requires high energy consumption and heavy pollution, while the purity of manganese metal obtained by electrolysis method reaches 99.9%. But at the same time, electrolytic manganese is still a heavily polluting industry. The metallurgical production process of electrolytic manganese is leaching, oxidation and neutralization after manganese ore grinding, then removing impurities, electrolysis, passivation and stripping after pressure filtration to prepare electrolytic manganese metal. In the above preparation process, passivati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C17/10B02C17/20B02C25/00B02C23/14C22B1/00C22B47/00
CPCB02C17/10B02C17/20B02C23/14B02C25/00C22B1/00C22B47/00
Inventor 常军秦林张超王子阳李学鹏
Owner TONGREN UNIV
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