CN209989272U - System for preparing magnesium oxide from low-grade magnesite - Google Patents
System for preparing magnesium oxide from low-grade magnesite Download PDFInfo
- Publication number
- CN209989272U CN209989272U CN201920509026.7U CN201920509026U CN209989272U CN 209989272 U CN209989272 U CN 209989272U CN 201920509026 U CN201920509026 U CN 201920509026U CN 209989272 U CN209989272 U CN 209989272U
- Authority
- CN
- China
- Prior art keywords
- discharge port
- ore discharge
- double
- low
- jigger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model provides a low-grade magnesite preparation magnesium oxide system, include roll crusher, drum sieve, rotary kiln one, double-deck shale shaker, jig, wind-force shaking table, diaphragm jig, high gradient magnet separator, dry-type magnet separator, ceramic filter, drying-machine, rotary kiln two. The utility model adopts the process system of pre-calcining-grading-reselecting-magnetic separating-re-calcining, low-grade magnesite low-temperature calcining, MgCO3CO is generated by incomplete decomposition, and the CO plays a role of reducing gas to reduce the weak magnetic iron mineral into a strong magnetic iron mineralAnd then grading is carried out, different gravity separation and magnetic separation processes are selected according to the characteristics of magnesite with different grain sizes, and finally purified magnesite is mixed and calcined to obtain the magnesite with the grade of over 98.5 percent, so that the low-grade magnesite is fully utilized, the low-grade magnesite is reasonably recycled, the resource utilization rate is improved, the occupied area is reduced, and the method has better social benefit and economic benefit.
Description
Technical Field
The utility model relates to a low-grade magnesite ore dressing technical field specifically is a low-grade magnesite preparation magnesium oxide system.
Background
The magnesite resources in China are abundant, the proven reserves are about 31 hundred million t and account for one fourth of the total reserves in the world, the magnesite resources are mainly distributed in Liaoning provinces and Shandong provinces, the total reserves account for about 95.11% of the total reserves in the country, the Liaoning province is mainly concentrated in the south areas of Liaoning provinces, such as the sea city, the Yingkou and other areas, the proven mine areas are 12, the reserved reserves are 25.77 million t and account for about 85% of the total reserves in the country and account for 20% of the total reserves in the world. However, as the magnesite resources are continuously developed and the requirements of high value-added magnesium salt products on raw materials are continuously improved, fewer magnesite (the content of magnesium oxide is 43% -47.8%) resources which can directly meet the production requirements are available. Meanwhile, due to the fact that the magnesite resources are rough and wild, high-quality resources are relatively in short supply. It is more worth noting that the massive abandonment of low-grade magnesite not only causes huge waste of resources, but also pollutes the surrounding environment. The main impurities in magnesite comprise CaO and Al2O3、SiO2、Fe2O3And the high impurity content directly leads to the reduction of the MgO content in the magnesite, and further leads to the consequences of the quality reduction of derivative products, the increase of production cost, the damage of ecological environment and the like. The purification method of low-grade magnesite mainly adopts flotation and chemical purification in the industry at present, the flotation process has large equipment investment, complex process flow and high production cost, and a flotation agent and a large amount of water resources are required to be used, so that the environmental pollution and the waste of the water resources are caused. The chemical purification method has more complex process flow, difficult control of process parameters, difficult realization of zero emission of chemical agents in the production process and high production cost, and therefore, has no substantial application in industrial production.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a magnesite flotation tailing preparation light-burned magnesite to solve the problem that exists among the above-mentioned background art.
The technical scheme of the utility model is realized like this:
a system for preparing magnesium oxide from low-grade magnesite comprises a pair roller crusher, a rotary screen, a first rotary kiln, a double-layer vibrating screen, a double-vibration jigger, a wind power shaking table, a diaphragm jigger, a high-gradient magnetic separator, a dry magnetic separator, a ceramic filter, a dryer and a second rotary kiln, wherein an ore discharge port of the pair roller crusher is connected with the rotary screen through a belt conveyor, a screen undersize ore discharge port of the rotary screen is connected with the first rotary kiln through a distributor, a discharge port of the first rotary kiln is connected with the double-layer vibrating screen through a spiral conveyor, a fine particle ore discharge port of the double-layer vibrating screen is connected with the double-vibration jigger through a pipeline, a medium particle ore discharge port of the double-layer vibrating screen is connected with the wind power shaking table through the spiral conveyor, a coarse particle ore discharge port of the double-layer vibrating screen is connected with the diaphragm jigger through a pipeline, a light product ore discharge port of the double-vibration jigger is connected with the high-gradient magnetic separator through, the light product ore discharge port of the wind power shaking table is connected with the dry magnetic separator through a screw conveyor, the tailing ore discharge port of the high-gradient magnetic separator and the light product ore discharge port of the diaphragm jigger are respectively connected with the ceramic filter through pipelines, the underflow ore discharge port of the ceramic filter is connected with the dryer through the screw conveyor, and the ore discharge port of the dryer and the light product ore discharge port of the dry magnetic separator are connected with the rotary kiln two-way distributing machine.
Preferably, the oversize ore discharge port of the rotary screen is connected with the double-roll crusher through a belt conveyor.
Preferably, the complex vibration jigger is provided with a size mixing tank, and the size mixing tank is provided with a water inlet pipe and a stirring device.
Preferably, the diaphragm jigger is provided with a size mixing tank, and the size mixing tank is provided with a water inlet pipe and a stirring device.
The utility model has the advantages that:
the utility model adopts the process system of pre-calcining-grading-reselecting-magnetic separating-re-calcining, firstly calcining low-grade magnesite under the condition of low temperature, MgCO3Can not be completely decomposed to generate CO, the CO can play a role of reducing gas, and weak magnetic iron minerals in the magnesite are reduced into strong magnetic iron minerals, and thenAnd then grading is carried out, different gravity separation and magnetic separation processes are selected according to the characteristics of magnesite with different grain sizes, and finally purified magnesite is mixed and calcined to obtain magnesia with the grade of over 98.5 percent, so that the low-grade magnesite is fully utilized, the low-grade magnesite is reasonably recycled, the resource utilization rate is improved, the occupied area is reduced, and the method has better social benefit and economic benefit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a system for preparing magnesium oxide from low-grade magnesite according to the present invention.
In the figure, 1-a double-roller crusher, 2-a rotary screen, 3-a rotary kiln I, 4-a double-layer vibrating screen, 5-a double-vibrating jigger, 6-a wind power shaking table, 7-a diaphragm jigger, 8-a high-gradient magnetic separator, 9-a dry magnetic separator, 10-a ceramic filter, 11-a dryer and 12-a rotary kiln II.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, a system for preparing magnesium oxide from low-grade magnesite comprises a pair roller crusher 1, a rotary screen 2, a first rotary kiln 3, a double-layer vibrating screen 4, a re-vibrating jigger 5, a wind power shaking table 6, a diaphragm jigger 7, a high-gradient magnetic separator 8, a dry magnetic separator 9, a ceramic filter 10, a dryer 11 and a second rotary kiln 12, wherein an ore discharge port of the pair roller crusher 1 is connected with the rotary screen 2 through a belt conveyor, an ore discharge port under the screen of the rotary screen 2 is connected with the first rotary kiln 3 through a distributor, an ore discharge port of the first rotary kiln 3 is connected with the double-layer vibrating screen 4 through a screw conveyor, a fine particle ore discharge port of the double-layer vibrating screen 4 is connected with the re-vibrating jigger 5 through a pipeline, a medium particle ore discharge port of the double-layer vibrating screen 4 is connected with the wind power shaking table 6 through a screw conveyor, a coarse particle ore discharge port of the double-layer vibrating screen 4 is connected with the diaphragm jigger 7 through a pipeline, the light product ore discharge port of the compound vibration jigging machine 5 is connected with the high-gradient magnetic separator 8 through a pipeline, the light product ore discharge port of the wind power shaking table 6 is connected with the dry magnetic separator 9 through a spiral conveyor, the tailing ore discharge port of the high-gradient magnetic separator 8 and the light product ore discharge port of the diaphragm jigging machine 7 are respectively connected with the ceramic filter 10 through pipelines, the underflow ore discharge port of the ceramic filter 10 is connected with the dryer 11 through a spiral conveyor, and the ore discharge port of the dryer 11 and the light product ore discharge port of the dry magnetic separator 9 are connected with the rotary kiln II 12 through a distributing machine.
And an oversize ore discharge port of the rotary screen 2 is connected with the double-roll crusher 1 through a belt conveyor.
The complex vibration jigger 5 is provided with a size mixing tank, and the size mixing tank is provided with a water inlet pipe and a stirring device.
The diaphragm jigger 7 is provided with a size mixing tank, and the size mixing tank is provided with a water inlet pipe and a stirring device.
The processing method of the system for preparing magnesium oxide from low-grade magnesite comprises the following steps:
crushing low-grade magnesite by a roller crusher 1, then feeding the magnesite to a roller crusher 2 by a belt conveyor for screening, feeding undersize products of the roller crusher 2 to a rotary kiln 3 by a distributing machine for calcining, returning oversize products of the roller crusher 2 by the belt conveyor for re-crushing the roller crusher 1, feeding ore discharge of the rotary kiln 3 to a double-layer vibrating screen 4 by a spiral conveyor for grading, feeding fine particles of the double-layer vibrating screen 4 to a re-vibrating jigger 5 by a pipeline for re-selection, feeding medium particles of the double-layer vibrating screen 4 to an air shaking table 6 by the spiral conveyor for air force re-selection, feeding coarse particles of the double-layer vibrating screen 4 to a diaphragm jigger 7 by the pipeline for re-selection, feeding light products of the re-vibrating jigger 5 to a high-gradient magnetic separator 8 by the pipeline for magnetic separation, feeding light products of the jigger 6 to a dry magnetic separator 9 by the spiral conveyor for magnetic separation, and feeding tailings of the high-gradient magnetic separator 8, The light products of the diaphragm jigger 7 are respectively sent to the ceramic filter 10 by a pipeline for dehydration, the bottom flow of the ceramic filter 10 is sent to the dryer 11 for drying by a screw conveyer, the ore discharge of the dryer 11 is sent to the rotary kiln II 12 by a distributing machine for calcination, the discharge of the rotary kiln II 12 is magnesium oxide products, the heavy products of the repeated vibration jigger 5, the heavy products of the wind power shaking table 6, the heavy products of the diaphragm jigger 7, the concentrate products of the high gradient magnetic separator 8 and the concentrate products of the dry magnetic separator 9 are tailings, and the overflow water of the ceramic filter 10 is recycled.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A system for preparing magnesium oxide from low-grade magnesite comprises a roller crusher, a rotary screen, a first rotary kiln, a double-layer vibrating screen, a double-vibration jigger, a wind power shaking table, a diaphragm jigger, a high-gradient magnetic separator, a dry magnetic separator, a ceramic filter, a dryer and a second rotary kiln, and is characterized in that an ore discharge port of the roller crusher is connected with the rotary screen through a belt conveyor, a screen lower ore discharge port of the rotary screen is connected with the first rotary kiln through a distributor, a discharge port of the first rotary kiln is connected with the double-layer vibrating screen through a spiral conveyor, a fine particle ore discharge port of the double-layer vibrating screen is connected with the double-vibration jigger through a pipeline, a medium particle ore discharge port of the double-layer vibrating screen is connected with the wind power shaking table through the spiral conveyor, a coarse particle ore discharge port of the double-layer vibrating screen is connected with the diaphragm jigger through a pipeline, a light product ore discharge port of the double-vibration jigger is connected with the high-gradient magnetic separator through a pipeline, the light product ore discharge port of the wind power shaking table is connected with the dry magnetic separator through a screw conveyor, the tailing ore discharge port of the high-gradient magnetic separator and the light product ore discharge port of the diaphragm jigger are respectively connected with the ceramic filter through pipelines, the underflow ore discharge port of the ceramic filter is connected with the dryer through the screw conveyor, and the ore discharge port of the dryer and the light product ore discharge port of the dry magnetic separator are connected with the rotary kiln two-way distributing machine.
2. The system for preparing magnesium oxide from low-grade magnesite according to claim 1, wherein an oversize ore discharge port of the rotary screen is connected with a double-roll crusher through a belt conveyor.
3. The system for preparing magnesium oxide from low-grade magnesite according to claim 1, wherein the complex vibration jigger is provided with a size mixing tank, and the size mixing tank is provided with a water inlet pipe and a stirring device.
4. The system for preparing magnesium oxide from low-grade magnesite according to claim 1, wherein the diaphragm jigger is provided with a size mixing tank, and the size mixing tank is provided with a water inlet pipe and a stirring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920509026.7U CN209989272U (en) | 2019-04-16 | 2019-04-16 | System for preparing magnesium oxide from low-grade magnesite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920509026.7U CN209989272U (en) | 2019-04-16 | 2019-04-16 | System for preparing magnesium oxide from low-grade magnesite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209989272U true CN209989272U (en) | 2020-01-24 |
Family
ID=69291615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920509026.7U Active CN209989272U (en) | 2019-04-16 | 2019-04-16 | System for preparing magnesium oxide from low-grade magnesite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209989272U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112320826A (en) * | 2020-10-29 | 2021-02-05 | 刘峰 | Method for jointly preparing high-purity magnesium oxide and refined ammonium sulfate by using low-grade magnesite |
-
2019
- 2019-04-16 CN CN201920509026.7U patent/CN209989272U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112320826A (en) * | 2020-10-29 | 2021-02-05 | 刘峰 | Method for jointly preparing high-purity magnesium oxide and refined ammonium sulfate by using low-grade magnesite |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104941780B (en) | A kind of ore-dressing technique for efficiently separating tantalum, tin and zinnwaldite | |
| CN108940569B (en) | Comprehensive utilization method of granite | |
| CN105268544A (en) | Wide-particle-size coal series kaolinite upgrading process based on fluidization sorting | |
| CN110270432B (en) | Method for removing non-calcareous mineral impurities in carbide slag | |
| CN109894257A (en) | A kind of method of comprehensive utilization of spodumene ore dressing | |
| CN102069033A (en) | Method for separating and extracting feldspar ore with complex impurity components | |
| CN103752401A (en) | Potash feldspar iron removal process | |
| CN108793731B (en) | Preparation method of raw material for ultra-white glass | |
| CN100571877C (en) | High-iron bauxite ferro-aluminum comprehensive utilization of separation method | |
| CN107583764B (en) | Beneficiation method for recovering mica from copper ore tailings | |
| CN110328047B (en) | Method for preparing ceramic raw material from granite stone sawn mud stone powder | |
| CN106475219B (en) | A kind of method for removing iron of alumyte flotation tailings | |
| CN102671757A (en) | Method for purifying aedelforsite by pure physical process | |
| CN100593441C (en) | Bauxite ore dressed and ore cleaned tailings piling method | |
| CN115418498B (en) | Treatment method of carbonate lithium clay | |
| CN103111364A (en) | Technology of extracting quartz and feldspar from gangue | |
| CN110002772B (en) | Method for preparing magnesium oxide from low-grade magnesite | |
| CN104785360B (en) | The dense medium separation method of coarse fraction apatite is reclaimed in a kind of mine tailing from magnetic iron ore | |
| CN106583051A (en) | Method for full-sludge flotation co-enrichment recovery of lithium niobium tantalum multi-metal resources | |
| CN101139655A (en) | Method for purifying granular slag steel | |
| CN104174861A (en) | Comprehensive recycling process of second zinc oxide rotary kiln tailings and production line of comprehensive recycling process | |
| CN105195427A (en) | Iron ore dry separation technology based on concentrated-phase gas-solid fluidized bed | |
| CN209989272U (en) | System for preparing magnesium oxide from low-grade magnesite | |
| CN100430145C (en) | Method for magnetic separating of aluminum and iron in high iron bauxite | |
| CN115025877A (en) | Method for efficiently and environmentally removing iron from bauxite by dry magnetic separator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |