CN105903535A - High-efficiency and low-energy-consumption mineral pulverizing technique and system - Google Patents
High-efficiency and low-energy-consumption mineral pulverizing technique and system Download PDFInfo
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- CN105903535A CN105903535A CN201610372101.0A CN201610372101A CN105903535A CN 105903535 A CN105903535 A CN 105903535A CN 201610372101 A CN201610372101 A CN 201610372101A CN 105903535 A CN105903535 A CN 105903535A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
- B02C21/02—Transportable disintegrating plant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
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Abstract
The invention relates to a high-efficiency and low-energy-consumption mineral pulverizing technique and system. The high-efficiency and low-energy-consumption mineral pulverizing technique is used for high-hardness materials which have the compressive strength over 160 MPa and are difficult to crush. The high-efficiency and low-energy-consumption mineral pulverizing technique comprises the specific operation steps that (1) the materials with the particle sizes being 0-1500 mm are conveyed into a movable high-efficiency rotary crushing station to be crushed; (2) the crushed materials are conveyed into a multi-cylinder hydraulic laminating cone crusher through a belt conveyor and a movable transferring station to be subjected to fine crushing; (3) the fine-crushed materials are conveyed into a fine crushed material bin through a conveying pipeline and conveyed into a high-pressure grinding roller to be subjected to further fine crushing; and (4) the materials subjected to further fine crushing are screened through a vibrating screen I, the materials on the screen are conveyed into the fine crushed material bin through a material turning system and enter the high-pressure grinding roller to be fine crushed again, and the materials below the screen are conveyed into a concentrating machine to be subjected to rough concentration. By the adoption of the high-efficiency and low-energy-consumption mineral pulverizing technique and system, the purposes of simplifying the technological process, reducing energy consumption and steel consumption of equipment and improving the pulverizing efficiency are achieved.
Description
[technical field]
The present invention relates to the mineral disintegrating process of a kind of high efficiency, low energy consumption, especially relate to a kind of high efficiency, the mineral disintegrating process of low energy consumption and system.
[background technology]
Known, Mineral Resources in China relatively horn of plenty, along with improving constantly of iron ore exploratory techniques, the iron ore deposit reserves verified are continuously increased.From the point of view of the quality of China's iron ore, mainly in " lean ore is many, rich ore is few, embedding portion fine size, many metals altogether, association ore ratio is high, ore composition is complicated " feature.Under current technological conditions, there are mainly magnetic iron ore, bloodstone, limonite, siderite, ilmenite and the pyrite etc. of industrial utility value.
Along with growing continuously and fast of economic construction, the fast development of the domestic steel and iron industry of drive, simultaneously facilitate the development of mineral processing in China technology, but important step, the crushing material technology of main energy consumption link and the technique as mineral processing technology is the most well developed.Pulverizing is the important step of mineral process.Pulverizing can be divided into four-stage: coarse crushing, in broken, in small, broken bits, ultrafine grinding, grind.Although crushing process is the operation of high energy consumption, but, compared with ball milling operation, energy consumption is only about the 50%-60% of ball mill operation.Current domestic crushing material Processes and apparatus mainly uses jaw crusher by material coarse crushing, the spring cone crusher of the material feeding single-particl crushing principle after coarse crushing is broken in carrying out, in broken after material send into next section of spring cone crusher continue operation in small, broken bits, granularity after in small, broken bits reaches below-10mm, then sends into back segment grinding machine and grinds.This technology is with a long history, technology maturation, but system energy consumption, steel consumption is big, technological process is complicated, capital cost is high, overall operation efficiency is low, enters that later stage ball mill granularity is big, making later stage ball milling power consumption, steel consumption, high (owing to mill feed size is big (-10mm), causing the only power consumption of grinding machine grinding, steel consumption (laminate, the abrasion of steel ball) is more than the 50% of whole ore-sorting system energy consumption；It is therefore proposed that one is on the premise of ensureing technological feasibility, simplification of flowsheet, reduce equipment energy consumption, steel consumption, the mineral disintegrating process of raising crush efficiency and system become the basic demand of those skilled in the art.
[summary of the invention]
In order to overcome the deficiency in background technology, the invention discloses a kind of high efficiency, the mineral disintegrating process of low energy consumption and system, it is achieved that simplification of flowsheet, reduction equipment energy consumption, steel consumption, the purpose of raising crush efficiency.
In order to realize described goal of the invention, the present invention adopts the following technical scheme that
A kind of high efficiency, the mineral disintegrating process of low energy consumption, including packaged type efficient cycle Crushing Station, packaged type transfer station, multicylinder hydraulic lamination gyratory crusher, fine particle storehouse, high-pressure roller mill and ore separators, for the high rigidity that compression strength is 160-220MPa, being difficult to the material that crushes, concrete operation step is:
(1) being crushed to granularity in the material of 0-1500mm granularity is delivered to packaged type efficient cycle Crushing Station is 0-150mm；
(2) material that granularity is 0-150mm is delivered to during multicylinder hydraulic lamination gyratory crusher is carried out in small, broken bits broken through belt conveyor, packaged type transfer station, in small, broken bits after raw meal particle size be 0-50mm；
(3) material that granularity is 0-50mm is delivered in fine particle storehouse by feed-line, and carry out in material being delivered to high-pressure roller mill by fine particle storehouse fine broken broken；
(4) material after the most broken is sieved by vibratory sieve I, repeat the most broken in on-the-sieve material after screening delivers to fine particle storehouse by stirring system and in entering high-pressure roller mill, after screening, undersize material is delivered to ore separators and is roughly selected, roughly selecting rear qualified material and send into back segment grinder system, defective material is as tailings glass.
A kind of high efficiency, the mineral disintegrating process of low energy consumption, including packaged type efficient cycle Crushing Station, packaged type transfer station, multicylinder hydraulic lamination gyratory crusher, fine particle storehouse, high-pressure roller mill and ore separators, for compression strength less than the soft of 160MPa, breakable material, concrete operation step is:
(1) being crushed to granularity in, the material of 0-1500mm granularity is delivered to packaged type efficient cycle Crushing Station is 0-150mm；
(2), material that granularity is 0-150mm is delivered to during multicylinder hydraulic lamination gyratory crusher is carried out in small, broken bits broken through belt conveyor, packaged type transfer station, in small, broken bits after raw meal particle size be 0-50mm；
(3) in, in small, broken bits broken after material sieved by vibratory sieve II, on-the-sieve material after screening is delivered in fine particle storehouse by feed-line, undersize material after screening is delivered to ore separators and is roughly selected, and roughly selects rear qualified material and sends into back segment grinder system, and defective material is as tailings glass；
(4), will be fed into the material in fine particle storehouse to deliver to high-pressure roller mill and carry out the fine broken operation of material, material after the most broken is sent into vibratory sieve I and is sieved, after on-the-sieve material after screening sends into fine particle storehouse by material stirring-up mechanism and enter high-pressure roller mill and carry out repeating the most broken, undersize material is sent into ore separators and is roughly selected, roughly selecting rear qualified material and send into back segment grinder system, defective material is as tailings glass.
A kind of high efficiency, the mineral disintegrating process of low energy consumption, the slot size of described vibratory sieve I adjusts according to milling capacity.
Described high efficiency, the mineral disintegrating process of low energy consumption, the slot size of vibratory sieve II adjusts according to milling capacity.
Described high efficiency, the mineral disintegrating process of low energy consumption, the volume in described fine particle storehouse meets high-pressure roller mill and runs the needs of 16 hours continuously.
Described high efficiency, the mineral disintegrating process of low energy consumption, described multicylinder hydraulic lamination gyratory crusher and high-pressure roller mill are disposed as removable frame.
A kind of high efficiency, the mineral crushing system of low energy consumption, including packaged type efficient cycle Crushing Station, packaged type transfer station, multicylinder hydraulic lamination gyratory crusher, fine particle storehouse, high-pressure roller mill and ore separators, by dump truck, material sent into packaged type efficient cycle Crushing Station, described packaged type efficient cycle Crushing Station is connected by belt conveyor with packaged type transfer station, between packaged type transfer station and multicylinder hydraulic lamination gyratory crusher, between multicylinder hydraulic lamination gyratory crusher and fine particle storehouse, fine between particle storehouse and high-pressure roller mill, all it is connected by feed-line between high-pressure roller mill with vibratory sieve I, it is provided with ore separators in the bottom of vibratory sieve I, it is provided with material stirring-up mechanism between vibratory sieve I and fine particle storehouse.
nullA kind of high efficiency、The mineral crushing system of low energy consumption，Including packaged type efficient cycle Crushing Station、Packaged type transfer station，Multicylinder hydraulic lamination gyratory crusher、Fine particle storehouse、High-pressure roller mill and ore separators，By dump truck, material sent into packaged type efficient cycle Crushing Station，Described packaged type efficient cycle Crushing Station is connected by belt conveyor with packaged type transfer station，Between packaged type transfer station and multicylinder hydraulic lamination gyratory crusher、It is equipped with feed-line between multicylinder hydraulic lamination gyratory crusher and vibratory sieve II，It is provided with ore separators in the bottom of vibratory sieve II，Fine particle storehouse it is provided with in the side of vibratory sieve II，Between vibratory sieve II and fine particle storehouse、Fine between particle storehouse and high-pressure roller mill、It is equipped with feed-line between high-pressure roller mill and vibratory sieve I，It is provided with material stirring-up mechanism between vibratory sieve I and fine particle storehouse.
Owing to have employed technique scheme, there is advantages that
null1、Present invention firstly provides efficient for packaged type cycle Crushing Station 1、Packaged type transfer station 2、Multicylinder hydraulic lamination gyratory crusher 3、Fine particle storehouse 4、High-pressure roller mill 5 and ore separators 8 are arranged in pairs or groups by rational means，Each key equipment is enable to give full play to the efficient of self、Energy-efficient performance，So that the crush efficiency of Integral-crushing system、Energy-efficient performance reaches maximum，Material efficiency in crushing process in mine can be made to improve 10%-30%，System energy consumption reduces 5%-10%，The deterioration of relevant consumable accessory in steel consumption i.e. running，Reduce 1%-20%，System up-front investment reduces 5%-10%，Simultaneously，Pulverized by " bed of material pulverizing " technology of multicylinder hydraulic lamination gyratory crusher 3，Make to be covered with inside crushing rear material micro-crack，Can effectively reduce the power consumption of next section of disintegrating apparatus.
2, the present invention is according to the change of mining point, packaged type transfer station 2, multicylinder hydraulic lamination gyratory crusher 3 and high-pressure roller mill 5 are set to movable type, the transportation radius making dump truck reaches the most reasonable, decrease the freight volume of dump truck, thus effectively reduce the exhaust emissions of dump truck, reduce energy consumption, be effectively increased conevying efficiency.
3, the present invention compares more domestic traditional disintegrating process technical efficiency raising 30-50%；The granularity simultaneously crushing laggard later stage grinding machine is reduced to below-3mm by-10mm, considerably reduces the power consumption of later stage ball mill；After carrying out ultra-fine grinding by high-pressure roller mill, the granularity particle less than-3mm can meet ore dressing requirement, such that it is able to leading ore dressing before realizing mill, thus more improve grinding machine and system effectiveness
[accompanying drawing explanation]
Fig. 1 is the process chart that the present invention is directed to the big material of hardness；
Fig. 2 is the process chart that the present invention is directed to the little material of hardness；
In figure: 1, packaged type efficient cycle Crushing Station；2, packaged type transfer station；3, multicylinder hydraulic lamination gyratory crusher；4, fine particle storehouse；5, high-pressure roller mill；6, vibratory sieve I；7, vibratory sieve II；8, ore separators.
[detailed description of the invention]
The explanation present invention that can be detailed by the following examples, the open purpose of the present invention is intended to protect all technological improvements in the scope of the invention.
In conjunction with the high efficiency described in accompanying drawing 1, the mineral disintegrating process of low energy consumption, including packaged type efficient cycle Crushing Station 1, packaged type transfer station 2, multicylinder hydraulic lamination gyratory crusher 3, fine particle storehouse 4, high-pressure roller mill 5 and ore separators 8, for the high rigidity that compression strength is 160-220MPa, being difficult to the material that crushes, concrete operation step is:
(1) being crushed to granularity in the material of 0-1500mm granularity is delivered to packaged type efficient cycle Crushing Station 1 is 0-150mm；
(2) material that granularity is 0-150mm is delivered to during multicylinder hydraulic lamination gyratory crusher 3 is carried out in small, broken bits broken through belt conveyor, packaged type transfer station 2, in small, broken bits after raw meal particle size be 0-50mm；
(3) material that granularity is 0-50mm is delivered in fine particle storehouse 4 by feed-line, and carry out in material being delivered to high-pressure roller mill 5 by fine particle storehouse 4 fine broken broken；
(4) material after the most broken is sieved by vibratory sieve I6, repeat the most broken in on-the-sieve material after screening delivers to fine particle storehouse 4 by stirring system and in entering high-pressure roller mill 5, after screening, undersize material is delivered to ore separators 8 and is roughly selected, roughly selecting rear qualified material and send into back segment grinder system, defective material is as tailings glass.
A kind of high efficiency, the mineral crushing system of low energy consumption, including packaged type efficient cycle Crushing Station 1, packaged type transfer station 2, multicylinder hydraulic lamination gyratory crusher 3, fine particle storehouse 4, high-pressure roller mill 5 and ore separators 8, by dump truck, material sent into packaged type efficient cycle Crushing Station 1, described packaged type efficient cycle Crushing Station 1 is connected by belt conveyor with packaged type transfer station 2, between packaged type transfer station 2 and multicylinder hydraulic lamination gyratory crusher 3, between multicylinder hydraulic lamination gyratory crusher 3 and fine particle storehouse 4, fine between particle storehouse 4 and high-pressure roller mill 5, all it is connected by feed-line between high-pressure roller mill 5 with vibratory sieve I6, it is provided with ore separators in the bottom of vibratory sieve I6, it is provided with material stirring-up mechanism between vibratory sieve I6 and fine particle storehouse 4；Described vibratory sieve I6, slot size according to milling capacity adjust；The volume in described fine particle storehouse 4 meets high-pressure roller mill 5 and runs the needs of 16 hours continuously；Described multicylinder hydraulic lamination gyratory crusher 3 and high-pressure roller mill 5 are disposed as removable frame.
In conjunction with the high efficiency described in accompanying drawing 2, the mineral disintegrating process of low energy consumption, including packaged type efficient cycle Crushing Station 1, packaged type transfer station 2, multicylinder hydraulic lamination gyratory crusher 3, fine particle storehouse 4, high-pressure roller mill 5 and ore separators 8, for compression strength less than the soft of 160MPa, breakable material, concrete operation step is:
(1) being crushed to granularity in, the material of 0-1500mm granularity is delivered to packaged type efficient cycle Crushing Station 1 is 0-150mm；
(2), material that granularity is 0-150mm is delivered to during multicylinder hydraulic lamination gyratory crusher 3 is carried out in small, broken bits broken through belt conveyor, packaged type transfer station 2, in small, broken bits after raw meal particle size be 0-50mm；
(3) in, in small, broken bits broken after material sieved by vibratory sieve II7, on-the-sieve material after screening is delivered in fine particle storehouse 4 by feed-line, undersize material after screening is delivered to ore separators 8 and is roughly selected, roughly selecting rear qualified material and send into back segment grinder system, defective material is as tailings glass；
(4), will be fed into the material in fine particle storehouse 4 to deliver to high-pressure roller mill 5 and carry out the fine broken operation of material, material after the most broken is sent into vibratory sieve I6 and is sieved, after on-the-sieve material after screening sends into fine particle storehouse 4 by material stirring-up mechanism and enter high-pressure roller mill 5 and carry out repeating the most broken, undersize material is sent into ore separators 8 and is roughly selected, roughly selecting rear qualified material and send into back segment grinder system, defective material is as tailings glass.
nullHigh efficiency、The mineral crushing system of low energy consumption，Including packaged type efficient cycle Crushing Station 1、Packaged type transfer station 2，Multicylinder hydraulic lamination gyratory crusher 3、Fine particle storehouse 4、High-pressure roller mill 5 and ore separators 8，By dump truck, material sent into packaged type efficient cycle Crushing Station 1，Described packaged type efficient cycle Crushing Station 1 is connected by belt conveyor with packaged type transfer station 2，Between packaged type transfer station 2 and multicylinder hydraulic lamination gyratory crusher 3、It is equipped with feed-line between multicylinder hydraulic lamination gyratory crusher 3 and vibratory sieve II7，It is provided with ore separators 8 in the bottom of vibratory sieve II7，Fine particle storehouse 4 it is provided with in the side of vibratory sieve II7，Between vibratory sieve II7 and fine particle storehouse 4、Fine between particle storehouse 4 and high-pressure roller mill 5、It is equipped with feed-line between high-pressure roller mill 5 and vibratory sieve I6，It is provided with material stirring-up mechanism between vibratory sieve I6 and fine particle storehouse 4，Described vibratory sieve I6、The slot size of vibratory sieve II7 adjusts according to milling capacity；The volume in described fine particle storehouse 4 meets high-pressure roller mill 5 and runs the needs of 16 hours continuously；Described multicylinder hydraulic lamination gyratory crusher 3 and high-pressure roller mill 5 are disposed as removable frame.
Part not in the detailed description of the invention is existing technology.
The embodiment selected in this article for the goal of the invention of the open present invention, it is suitable to be presently considered to be, however, it should be understood that, it is contemplated that include that all belong to all changes of this design and the embodiment in invention scope and improvement.
Claims (8)
1. a high efficiency, the mineral disintegrating process of low energy consumption, including packaged type efficient cycle Crushing Station (1), packaged type transfer station (2), multicylinder hydraulic lamination gyratory crusher (3), fine particle storehouse (4), high-pressure roller mill (5) and ore separators (8), it is characterized in that: for the high rigidity that compression strength is 160-220MPa, being difficult to the material that crushes, concrete operation step is:
(1) being crushed to granularity in the material of 0-1500mm granularity is delivered to packaged type efficient cycle Crushing Station (1) is 0-150mm；
(2) material that granularity is 0-150mm is delivered to during multicylinder hydraulic lamination gyratory crusher (3) is carried out in small, broken bits broken through belt conveyor, packaged type transfer station (2), in small, broken bits after raw meal particle size be 0-50mm；
(3) material that granularity is 0-50mm is delivered in fine particle storehouse (4) by feed-line, and carry out in material being delivered to high-pressure roller mill (5) by fine particle storehouse (4) fine broken broken；
(4) material after the most broken is by vibratory sieve I(6) sieve, on-the-sieve material after screening repeats the most broken in being delivered in fine particle storehouse (4) by stirring system and entered high-pressure roller mill (5), after screening, undersize material is delivered to ore separators (8) and is roughly selected, roughly selecting rear qualified material and send into back segment grinder system, defective material is as tailings glass.
2. a high efficiency, the mineral disintegrating process of low energy consumption, including packaged type efficient cycle Crushing Station (1), packaged type transfer station (2), multicylinder hydraulic lamination gyratory crusher (3), fine particle storehouse (4), high-pressure roller mill (5) and ore separators (8), it is characterized in that: for compression strength less than the soft of 160MPa, breakable material, concrete operation step is:
(1) being crushed to granularity in, the material of 0-1500mm granularity is delivered to packaged type efficient cycle Crushing Station (1) is 0-150mm；
(2), material that granularity is 0-150mm is delivered to during multicylinder hydraulic lamination gyratory crusher (3) is carried out in small, broken bits broken through belt conveyor, packaged type transfer station (2), in small, broken bits after raw meal particle size be 0-50mm；
(3) in, in small, broken bits broken after material by vibratory sieve II(7) sieve, on-the-sieve material after screening is delivered in fine particle storehouse (4) by feed-line, undersize material after screening is delivered to ore separators (8) and is roughly selected, roughly selecting rear qualified material and send into back segment grinder system, defective material is as tailings glass；
(4), will be fed into the material of fine particle storehouse (4) to deliver to high-pressure roller mill (5) and carry out the fine broken operation of material, vibratory sieve I(6 sent into by material after the most broken) sieve, on-the-sieve material after screening is sent into fine particle storehouse (4) by material stirring-up mechanism and afterwards and is entered high-pressure roller mill (5) and carry out repeating the most broken, undersize material is sent into ore separators (8) and is roughly selected, roughly selecting rear qualified material and send into back segment grinder system, defective material is as tailings glass.
High efficiency the most according to claim 1 and 2, the mineral disintegrating process of low energy consumption, is characterized in that: described vibratory sieve I(6) slot size according to milling capacity adjust.
High efficiency the most according to claim 2, the mineral disintegrating process of low energy consumption, is characterized in that: vibratory sieve II(7) slot size according to milling capacity adjust.
High efficiency the most according to claim 1 and 2, the mineral disintegrating process of low energy consumption, is characterized in that: the volume of described fine particle storehouse (4) meets high-pressure roller mill (5) and runs the needs of 16 hours continuously.
High efficiency the most according to claim 1 and 2, the mineral disintegrating process of low energy consumption, is characterized in that: described multicylinder hydraulic lamination gyratory crusher (3) and high-pressure roller mill (5) are disposed as removable frame.
null7. a high efficiency as claimed in claim 1、The mineral crushing system of low energy consumption，Including packaged type efficient cycle Crushing Station (1)、Packaged type transfer station (2)、Multicylinder hydraulic lamination gyratory crusher (3)、Fine particle storehouse (4)、High-pressure roller mill (5) and ore separators (8)，It is characterized in that: by dump truck, material sent into packaged type efficient cycle Crushing Station (1)，Described packaged type efficient cycle Crushing Station (1) is connected by belt conveyor with packaged type transfer station (2)，Between packaged type transfer station (2) and multicylinder hydraulic lamination gyratory crusher (3)、Between multicylinder hydraulic lamination gyratory crusher (3) and fine particle storehouse (4)、Fine between particle storehouse (4) and high-pressure roller mill (5)、High-pressure roller mill (5) and vibratory sieve I(6) between be all connected by feed-line，At vibratory sieve I(6) bottom be provided with ore separators，At vibratory sieve I(6) and fine particle storehouse (4) between be provided with material stirring-up mechanism.
null8. a high efficiency as claimed in claim 3、The mineral disintegrating process of low energy consumption，Including packaged type efficient cycle Crushing Station (1)、Packaged type transfer station (2)，Multicylinder hydraulic lamination gyratory crusher (3)、Fine particle storehouse (4)、High-pressure roller mill (5) and ore separators (8)，It is characterized in that: by dump truck, material sent into packaged type efficient cycle Crushing Station (1)，Described packaged type efficient cycle Crushing Station (1) is connected by belt conveyor with packaged type transfer station (2)，Between packaged type transfer station (2) and multicylinder hydraulic lamination gyratory crusher (3)、Multicylinder hydraulic lamination gyratory crusher (3) and vibratory sieve II(7) between be equipped with feed-line，At vibratory sieve II(7) bottom be provided with ore separators (8)，At vibratory sieve II(7) side be provided with fine particle storehouse (4)，Vibratory sieve II(7) and fine particle storehouse (4) between、Fine between particle storehouse (4) and high-pressure roller mill (5)、High-pressure roller mill (5) and vibratory sieve I(6) between be equipped with feed-line，At vibratory sieve I(6) and fine particle storehouse (4) between be provided with material stirring-up mechanism.
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| CN110586295A (en) * | 2019-09-24 | 2019-12-20 | 安徽马钢矿业资源集团有限公司 | Fine-fraction material screening process method for dolomite ore |
| CN110882829A (en) * | 2019-12-11 | 2020-03-17 | 郑州大学 | Coarse particle tailing discarding sorting system based on hydraulic flotation technology |
| CN110899004A (en) * | 2019-12-11 | 2020-03-24 | 郑州大学 | Nonferrous metal solid waste source reduction process based on hydraulic flotation technology |
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| CN108787128A (en) * | 2018-04-26 | 2018-11-13 | 乌海市君正矿业有限责任公司 | A kind of calcium carbide limestone crushing process |
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| CN110586295A (en) * | 2019-09-24 | 2019-12-20 | 安徽马钢矿业资源集团有限公司 | Fine-fraction material screening process method for dolomite ore |
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| CN110899004A (en) * | 2019-12-11 | 2020-03-24 | 郑州大学 | Nonferrous metal solid waste source reduction process based on hydraulic flotation technology |
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