CN101912810B - Manganese dioxide ore grinding method - Google Patents
Manganese dioxide ore grinding method Download PDFInfo
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- CN101912810B CN101912810B CN2010102279980A CN201010227998A CN101912810B CN 101912810 B CN101912810 B CN 101912810B CN 2010102279980 A CN2010102279980 A CN 2010102279980A CN 201010227998 A CN201010227998 A CN 201010227998A CN 101912810 B CN101912810 B CN 101912810B
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- ore
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G45/00—Compounds of manganese
- C01G45/02—Oxides; Hydroxides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B47/00—Obtaining manganese
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- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
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Abstract
The invention discloses a manganese dioxide ore grinding method. The method comprises the following steps of: (1) feeding manganese dioxide ore into a hopper by using a trolley, mixing the manganese dioxide ore and circulating water over a crusher, relatively uniformly feeding the mixture into the crusher; (2) feeding the ore pulp formed by crushing in the crusher into a water tank of a spiral classifier to classify to make small granular ore sand in the ore pulp float on the surface of the water tank and big granular ore sand settle down to the bottom of the water tank; (3) discharging the big granular ore sand into a wet ball mill from an ore discharging opening for grinding, and continuously classifying the ground ore pulp entering the spiral classifier again from the side face of the front end of the spiral classifier; and (4) repeating the step (3), wherein the small granular ore sand obtained after classification flows into a pulping tank from an overflow weir, and the ore pulp entering the pulping tank is fully stirred by a stirrer and is then conveyed into a pressure filter by a mortar pump to filter under pressure so as to separate the solid from the liquid. By method, the ore grinding efficiency and the recovery rate can be improved, and the ore grinding cost during the production of the manganese dioxide is reduced.
Description
Technical field
The present invention relates to a kind of milling method of ore, particularly a kind of wet milling process of dioxide ore for manganese.
Background technology
At present, the ore grinding technology of dioxide ore for manganese has two kinds of wet grinding and dry grinding methods in the manganese dioxide production process.The shortcoming that the dry grinding method exists is: the ore for containing mud height, moisture big (greater than 4%-5%) must carry out drying; Therefore all should not adopt dry grinding in China south; Air-flow transportation, air classification are leaned in dry grinding in addition, so the problem of the aspects such as wear-resisting, dustproof and motion consumption of system is bigger.The advantage of wet grinding is: except that the harder ore of minority, and the iron ore that most metallic ores, especially density are bigger; Can use wet-milling; The energy consumption of wet-milling also is lower than dry grinding, and its hierarchy system and auxiliary equipment are fairly simple, and the wet-milling operation does not produce dust; Environmental pollution is little, and its investment also is lower than dry grinding.But there is following shortcoming in wet grinding: production capacity is lower, and liner plate consumes more, for harder ore, consider to eliminate the measure of " hard rock " accumulation, and there is the problem that is difficult to measure in wet-milling in addition.Therefore be necessary wet grinding is made some process modification,, improve grinding efficiency and metal recovery rate, reduce the ore grinding cost that manganese dioxide is produced to shorten technology time spent and energy consumption, accurately metering.
Summary of the invention
Technical problem to be solved by this invention provides a kind of milling method of dioxide ore for manganese, improves grinding efficiency and metal recovery rate, reduces manganese dioxide and produces the ore grinding cost.
The present invention solves the problems of the technologies described above the wet-milling production method that the technical scheme that adopts provides a kind of manganese dioxide; In turn include the following steps: 1, a kind of milling method of dioxide ore for manganese; It is characterized in that in turn including the following steps: drop into dioxide ore for manganese in the middle of the hopper by trolley (1); Hopper is delivered to disintegrating machine top by feeding belt, above the disintegrating machine through with after recirculated water mixes, more evenly put in the middle of the disintegrating machine; (2) ore pulp that after crusher in crushing, forms feeds from spiral classifier front end top; Carry out classification in the tank of entering spiral classifier; The conveyor screw that does not stop to rotate makes that the granule ore in sand form of diameter＜=0.13mm floats on flume surface in the ore pulp, and the bulky grain ore in sand form of diameter＞0.13mm is sunken at the bottom of the tank; (3) said bulky grain ore in sand form is pushed to the tank afterbody by the conveyor screw blade of side rotation, enters wet ball mill by gape and grinds, and the ore pulp after the grinding gets into spiral classifier again from spiral classifier front end side and proceeds classification; (4) repeating step (3); The granule ore in sand form that obtains after the classification flows into the pulp groove from downflow weir; Ore pulp behind the entering pulp groove is sent to press filtration realization Separation of Solid and Liquid in the filter press by mortar pump after mixer fully stirs; The liquid that obtains after the press filtration returns step 1 and uses as recirculated water, and the replacement breeze is used for producing in the chemical combination groove and solid is delivered to.
In the milling method of above-mentioned dioxide ore for manganese, the feeding belt transmission speed is 0.5m/s in the said step 1.
In the milling method of above-mentioned dioxide ore for manganese, the long 9500mm of the tank of spiral classifier in the said step 2, wide 1370mm, said bottom of gullet angle of inclination is 10 °.
In the milling method of above-mentioned dioxide ore for manganese, in ball mill, add a certain amount of abrasive body in the said step 3 simultaneously.
In the milling method of above-mentioned dioxide ore for manganese, ball mill is the wet type grate ball mill in the said step 3, and the diameter of its feeding granularity is greater than 0.13mm and less than 25mm.。
In the milling method of above-mentioned dioxide ore for manganese, said abrasive body is a steel ball, and said steel ball gross weight is 7 tons, and by large, medium and small configuration, its ratio is 30%, 30%, 40%.
In the milling method of above-mentioned dioxide ore for manganese, the liquid-solid volume ratio of ore pulp is 2～3 in the spiral classifier in said step 2 and the step 3.
In the milling method of above-mentioned dioxide ore for manganese, pulp groove mixer speed is 10r/s in the said step 4.
The present invention contrasts prior art has following beneficial effect: the milling method of dioxide ore for manganese provided by the invention; On the basis of wet grinding, increase the washup operation, the adjusting process flow process, thus shortened technology time spent and energy consumption; Improve grinding efficiency and metal recovery rate, reduce production costs.In addition; The milling method of dioxide ore for manganese provided by the invention is through controlling spiral classifier bottom of gullet angle of inclination; To pulp slurry in the feeding granularity of ball mill, the spiral classifier admittedly than and pulp groove mixer speed controlled, further improve grinding efficiency and metal recovery rate.
Description of drawings
Fig. 1 is a production technology sketch map of the present invention.
Among the figure:
1 hopper, 2 feeding belts, 3 disintegrating machines
4 ball mills, 5 spiral classifiers, 6 pulp mortises
7 filter presses, 8 small-sized pulp grooves
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further description.
Embodiment
450 tons of soft manganese ores at present, disintegrating machine, spiral classifier, ball milling and 30m
3Pulp groove, forklift are realized the present invention.
Above-mentioned 450 tons of pyrolusites are divided in the middle of 300 input hoppers 1 by trolley, each about 2 minutes at interval, deliver to disintegrating machine 3 tops by feeding belt 2 (speed 0.5m/s), soft manganese ore and recirculated water are put into after mixing in the middle of the disintegrating machine 3 in that disintegrating machine (37 kilowatts) mouth is even; The ore pulp that after disintegrating machine 3 fragmentations, forms feeds from spiral classifier 5 front ends top, and the model of spiral classifier 5 is FLG-12, screw diameter 1200mm; Point acc power 7.5kw, cell body is of a size of long 9500mm, wide 1370mm; It is 10 degree that the bottom angled degree is installed, and liquid-solid volume ratio is 2～3 in the spiral classifier, and ore pulp gets in the tank of spiral classifier 5; Form a dull pond before the tank, the rotation that do not stop owing to conveyor screw this moment, the influence that ore pulp is stirred; Diameter floats on the surface smaller or equal to the granule of 0.13mm (120 order), flows out tank from downflow weir, and diameter greater than the oarse-grained ore in sand form deepness of 0.13mm at the bottom of tank; Conveyor screw blade by side is rotated is pushed the tank afterbody to, enters wet ball mill 4 by gape and grinds, and wet ball mill 4 is selected the wet type grate ball mill for use; Its feeding granularity is less than 25mm and greater than 0.13mm, and the wet ball mill model that output 4t/h, present embodiment use is Φ 1500*3000; Carrier speed is 27.8r/min, medium charge weight 7t, main motor model Y315M-6; Power 90kw, rotating speed 960r/min, voltage 380v.Simultaneously, in columnar ball mill 4, add a certain amount of abrasive body, like steel ball; The steel ball gross weight is 7t, and by large, medium and small configuration, its ratio is 30%, 30%, 40%; The rotation of cylinder and the centrifugal force that produces; Make steel ball rise to certain height, and then freely fall the grinding of being produced of rolling between impact and the steel ball itself of generation and roll under the double action, grind material.The good inlet amount of its process control and the water yield, thus output and granularity guaranteed.
Ore pulp after ball mill 4 grinds gets into spiral classifier again and proceeds classification from spiral classifier 5 front end sides.Disintegrating machine 3, spiral classifier 5 and ball mill 4 just form a closed-circuit system like this.And the ore pulp that after grinding classification, reaches the technology granularity requirements flows into the pulp groove 6 from downflow weir; Get into ore pulp behind the pulp groove 6 and sent by mortar pump under the abundant stirring of mixer to press filtration realizes Separation of Solid and Liquid in the filter press 7, pulp groove 6 mixer speed be 10r/s (revolutions per second).The liquid that obtains after the press filtration returns wet-milling washup system, uses as recirculated water, and the replacement breeze is used for producing in the chemical combination groove and solid is delivered to.This process ore pulp process ball mill grinding and spiral classifier are classified to desired particle size and get final product, and technical maturity only needs 3～5 people's per tour to finish the work, and reduce than the dry grinding energy consumption to reach 70%～80%.
Below be embodiment of the invention gained data:
| The ore grinding type | Advance the ore deposit amount | Granularity (120 order) | Time | Personnel |
| The washup wet-milling | 450t | 90％ | |
3 |
Metering is a very important link aborning, if metering will definitely not cause the production cycle long, metal recovery rate is low, increase cost.Milling method of the present invention can accurately measure, and concrete grammar is following: at first, carry out getting after the Separation of Solid and Liquid sample of solid through filter press 6, analyze its moisture (b%); Secondly, below filter press 7 discharge ports, doing a small-sized pulp groove 8 (diameter 3500mm, high 3500mm) is used to adorn through the later solid of filter press 7 separation; Once more, process ore pulp (the solid-liquid volume ratio is about 1: 5) to the solid after the press filtration, add certain water (rule of thumb addition, last solid-to-liquid ratio is about 1: 5 and gets final product) in the remaining on board ore deposit before the cake earlier and remembered water yield V1 (L).Remembered that being discharged into the ore deposit cake after the water yield processes ore pulp, has remembered volume V2 (L) simultaneously; Thereby use volume to measure the proportion A1 that 1L ore pulp and weighing-appliance weight m1 calculate ore pulp at last as the container of 1L.Calculate the weight in ore deposit by this mode: ore pulp weight kg (butt)=(V2*A1-V1*1) * b%.
In sum, the present invention mainly applies to the grinding system of manganese dioxide production line, and soft manganese ore is more a lot of than placer low price; And a lot of soft manganese ores are just arranged near the Laibin City, Guangxi; But dry grinding can't grind soft manganese ore (moisture 40-55%), and the present invention utilizes the advantage of these characteristics of soft manganese ore as itself just, so final discharging-material size all can reach 0.074mm; Can satisfy the requirement of production technology fully, the manganese metal leaching rate reaches more than 75%.
Though the present invention discloses as above with preferred embodiment; Right its is not that any those skilled in the art are not breaking away from the spirit and scope of the present invention in order to qualification the present invention; When can doing a little modification and perfect, so protection scope of the present invention is when being as the criterion with what claims defined.
Claims (8)
1. the milling method of a dioxide ore for manganese is characterized in that in turn including the following steps:
(1) dioxide ore for manganese is dropped in the middle of the hopper by trolley, hopper is delivered to the disintegrating machine top by feeding belt, above the disintegrating machine through with after recirculated water mixes, more evenly put in the middle of the disintegrating machine;
(2) ore pulp that after crusher in crushing, forms feeds from spiral classifier front end top; Carry out classification in the tank of entering spiral classifier; The conveyor screw that does not stop to rotate makes that the bulky grain ore in sand form of diameter < the granule ore in sand form of=0.13mm floats on flume surface, diameter>0.13mm is sunken at the bottom of the tank in the ore pulp;
(3) said bulky grain ore in sand form is pushed to the tank afterbody by the conveyor screw blade of side rotation, enters wet ball mill by gape and grinds, and the ore pulp after the grinding gets into spiral classifier again from spiral classifier front end side and proceeds classification;
(4) repeating step (3); The granule ore in sand form that obtains after the classification flows into the pulp groove from downflow weir; Ore pulp behind the entering pulp groove is sent to press filtration realization Separation of Solid and Liquid in the filter press by mortar pump after mixer fully stirs; The liquid that obtains after the press filtration returns step 1 and uses as recirculated water, and the replacement breeze is used for producing in the chemical combination groove and solid is delivered to.
2. the milling method of dioxide ore for manganese according to claim 1 is characterized in that the feeding belt transmission speed is 0.5m/s in the said step (1).
3. the milling method of dioxide ore for manganese according to claim 1 is characterized in that the long 9500mm of tank of spiral classifier in the said step (2), wide 1370mm, and said bottom of gullet angle of inclination is 10 °.
4. the milling method of dioxide ore for manganese according to claim 1 is characterized in that in wet ball mill, adding simultaneously in the said step (3) abrasive body.
5. the milling method of dioxide ore for manganese according to claim 1 is characterized in that wet ball mill is the wet type grate ball mill in the said step (3), and the diameter of its feeding granularity is greater than 0.13mm and less than 25mm.
6. the milling method of dioxide ore for manganese according to claim 4 is characterized in that said abrasive body is a steel ball, and said steel ball gross weight is 7 tons, and by large, medium and small configuration, its ratio is 30%, 30%, 40%.
7. the milling method of dioxide ore for manganese according to claim 1 is characterized in that the liquid-solid volume ratio of ore pulp in the spiral classifier in said step (2) and the step (3) is 2～3.
8. the milling method of dioxide ore for manganese according to claim 1 is characterized in that pulp groove mixer speed is 10r/s in the said step (4).
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102279980A CN101912810B (en) | 2010-07-15 | 2010-07-15 | Manganese dioxide ore grinding method |
| PCT/CN2011/077014 WO2012006937A1 (en) | 2010-07-15 | 2011-07-09 | Method for grinding manganese dioxide ore |
| AU2011278809A AU2011278809B2 (en) | 2010-07-15 | 2011-07-09 | Method for grinding manganese dioxide ore |
| SG2012050191A SG182412A1 (en) | 2010-07-15 | 2011-07-09 | Method for grinding manganese dioxide ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102279980A CN101912810B (en) | 2010-07-15 | 2010-07-15 | Manganese dioxide ore grinding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101912810A CN101912810A (en) | 2010-12-15 |
| CN101912810B true CN101912810B (en) | 2012-08-22 |
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ID=43320533
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102279980A Active CN101912810B (en) | 2010-07-15 | 2010-07-15 | Manganese dioxide ore grinding method |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN101912810B (en) |
| AU (1) | AU2011278809B2 (en) |
| SG (1) | SG182412A1 (en) |
| WO (1) | WO2012006937A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912810B (en) * | 2010-07-15 | 2012-08-22 | 广西有色金属集团汇元锰业有限公司 | Manganese dioxide ore grinding method |
| CN102491357B (en) * | 2011-12-07 | 2013-08-14 | 湖南超牌科技有限公司 | Superfine kaolin production system and use method thereof |
| CN102489390A (en) * | 2011-12-28 | 2012-06-13 | 株洲冶炼集团股份有限公司 | Device for separating coarse particles from ore pulp |
| CN105344466B (en) * | 2015-12-09 | 2018-02-02 | 永兴县灿阳贵金属有限责任公司 | A kind of burnt ore slag for comprehensive processing system |
| CN111167584B (en) * | 2019-12-30 | 2021-08-17 | 贵州武陵锰业有限公司 | Manganese ore industrialization wet ball milling method based on electrolytic manganese anolyte |
| CN113751208A (en) * | 2021-10-26 | 2021-12-07 | 浙江海洋大学 | Mineral processing device for producing phosphorite by gathering phosphorus from microalgae |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB393607A (en) * | 1930-08-30 | 1933-05-31 | Cuban American Manganese Corp | Improvements in concentrating manganese ores |
| US5496526A (en) * | 1993-08-30 | 1996-03-05 | The United States Of America As Represented By The Secretary Of The Interior | Production of intermediate grade manganese concentrate from low grade manganiferous ores |
| CN101058082A (en) * | 2007-05-31 | 2007-10-24 | 中国铝业股份有限公司 | Mine milling method for improving particles size distribution of bauxite mine milling products |
| CN101653745A (en) * | 2009-08-07 | 2010-02-24 | 招金矿业股份有限公司 | Fine grinding method of gold and silver concentrate |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1133503C (en) * | 2000-10-29 | 2004-01-07 | 招远市夏甸金矿 | Dressing process for gold ore |
| BR0100348B1 (en) * | 2001-01-24 | 2012-03-20 | concentration and calcination process of zinc silicate minerals and concentrated zinc silicate product | |
| US7299930B2 (en) * | 2003-11-27 | 2007-11-27 | Procesos Mineros E Industries Conosur S.A. | Collecting agent comprising ammoniated compounds (primary, secondary, tertiary amines), for use in the process of grinding and/or floating copper, molybdenum, zinc, and other contained mineral ores |
| CN1785527A (en) * | 2004-12-12 | 2006-06-14 | 安阳钢铁集团有限责任公司 | Oxidation ore classification technology |
| CN1317225C (en) * | 2004-12-20 | 2007-05-23 | 武汉理工大学 | Preparation of silica flour or feldspar powder and preparing apparatus thereof |
| CN1895788B (en) * | 2005-07-11 | 2010-04-28 | 郝志刚 | Concentration method for qualifying headings and increasing recovery rate |
| CN101912810B (en) * | 2010-07-15 | 2012-08-22 | 广西有色金属集团汇元锰业有限公司 | Manganese dioxide ore grinding method |
-
2010
- 2010-07-15 CN CN2010102279980A patent/CN101912810B/en active Active
-
2011
- 2011-07-09 SG SG2012050191A patent/SG182412A1/en unknown
- 2011-07-09 AU AU2011278809A patent/AU2011278809B2/en not_active Ceased
- 2011-07-09 WO PCT/CN2011/077014 patent/WO2012006937A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB393607A (en) * | 1930-08-30 | 1933-05-31 | Cuban American Manganese Corp | Improvements in concentrating manganese ores |
| US5496526A (en) * | 1993-08-30 | 1996-03-05 | The United States Of America As Represented By The Secretary Of The Interior | Production of intermediate grade manganese concentrate from low grade manganiferous ores |
| CN101058082A (en) * | 2007-05-31 | 2007-10-24 | 中国铝业股份有限公司 | Mine milling method for improving particles size distribution of bauxite mine milling products |
| CN101653745A (en) * | 2009-08-07 | 2010-02-24 | 招金矿业股份有限公司 | Fine grinding method of gold and silver concentrate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101912810A (en) | 2010-12-15 |
| AU2011278809A1 (en) | 2012-08-02 |
| SG182412A1 (en) | 2012-08-30 |
| WO2012006937A1 (en) | 2012-01-19 |
| AU2011278809B2 (en) | 2016-07-07 |
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Address after: 546138 888 Meibin Road, Mayor of Laibin, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Huiyuan Manganese Industry Co., Ltd. Address before: No. 58 Mei Lu, Mayor of Laibin, Guangxi Zhuang Autonomous Region Patentee before: Guangxi Non-Ferrous Metals Group Huiyuan Manganese Industry Co., Ltd. |
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