CN218742376U - Wet-process ore dressing quality-improving treatment system for high-impurity bauxite - Google Patents
Wet-process ore dressing quality-improving treatment system for high-impurity bauxite Download PDFInfo
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- CN218742376U CN218742376U CN202122475966.9U CN202122475966U CN218742376U CN 218742376 U CN218742376 U CN 218742376U CN 202122475966 U CN202122475966 U CN 202122475966U CN 218742376 U CN218742376 U CN 218742376U
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Abstract
The utility model discloses a high-impurity bauxite wet-method mineral processing quality-improving treatment system, which comprises an ore crushing and grinding system, an ore roasting and desulfurizing system, a wet-method magnetic separation system and a leaching and desiliconizing system which are connected in sequence; the ore crushing and grinding system comprises a crushing and screening system and a grinding and selecting system; the crushing and screening system comprises a crusher and a screening machine which are connected in a circulating manner; the grinding and selecting system comprises an ore grinding machine and a winnowing machine which are connected in a circulating manner; the screening machine and the ore grinding machine are connected through a belt, and the rear end of the air separation machine is connected with a powder bin; the ore roasting desulfurization system comprises a feeding machine, a cyclone preheater, a suspension roasting furnace and a cyclone cooler which are connected in sequence through pipelines; the cyclone cooler is circularly connected with the cyclone preheater through a pipeline; the rear end of the cyclone cooler is connected with a concentrate bin; the wet magnetic separation system comprises a No. 1 size mixing barrel, a wet magnetic separator and a No. 1 filter which are connected in sequence; the 1# filter is connected with 1# size mixing bucket circulation, the utility model discloses a complicated difficult bauxite ore dressing of utilizing of high content impurity is carried the matter.
Description
Technical Field
The utility model belongs to the technical field of bauxite beneficiation, specifically be high content impurity bauxite wet process ore dressing matter-improving processing system.
Background
China is the first major country of alumina production, but the bauxite resource reserves in China only account for about 3% of the bauxite resource reserves in the world, the external dependency of ores is close to 60%, and along with the continuous development and utilization of resources, domestic high-grade ores are gradually exhausted, most of the existing ores have the composite characteristics of high sulfur, high silicon and high iron, so in the bauxite purification process, desulfurization, desilicication and deferrization are needed, and meanwhile, in order to improve the comprehensive utilization rate and the added value of the difficultly-utilized bauxite, a bauxite wet-process beneficiation quality-improving treatment system with high impurity content is specially provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high content impurity bauxite wet process ore dressing improves matter processing system breaks through the comprehensive processing of grinding system, ore calcination desulfurization system, wet process magnetic separation system, alkali leaching desiliconization system through the ore, realizes that the complicated difficult bauxite ore dressing that utilizes of high content impurity improves the matter.
The technical scheme is as follows:
a wet-process ore dressing quality-improving treatment system for high-impurity bauxite comprises an ore crushing and grinding system, an ore roasting and desulfurizing system, a wet-process magnetic separation system and a leaching and desiliconizing system which are sequentially connected.
The ore crushing and grinding system comprises a crushing and screening system and a grinding and selecting system; the crushing and screening system comprises a crusher and a screening machine which are connected in a circulating manner; the grinding and sorting system comprises an ore grinding machine and a winnowing machine which are connected in a circulating manner; the screening machine and the ore grinding machine are connected through a belt, and the rear end of the air separation machine is connected with a powder bin;
the ore roasting desulfurization system comprises a feeding machine, a cyclone preheater, a suspension roasting furnace and a cyclone cooler which are connected in sequence through pipelines; the feeding machine is connected with the powder bin; the cyclone preheater is also connected with a flue gas purification device, the suspension roasting furnace is connected with a hot blast stove, and the hot blast stove is connected with the flue gas purification device to realize the comprehensive treatment of the flue gas; the cyclone cooler is circularly connected with the cyclone preheater through a pipeline, so that the comprehensive utilization of heat is improved; the rear end of the cyclone cooler is connected with a concentrate bin;
the wet magnetic separation system comprises a No. 1 size mixing barrel, a wet magnetic separator and a No. 1 filter which are connected in sequence; the wet magnetic separator can perform magnetic separation to remove iron, improve the quality of the bauxite and harvest a byproduct magnetic substance; the No. 1 filter is circularly connected with the No. 1 size mixing barrel; the recycling of the filtered water is realized, and the discharge is reduced.
The leaching desiliconization system comprises a No. 2 size mixing barrel, a stirring leaching tank and a No. 2 filter which are connected in sequence; the No. 2 filter is also sequentially connected with the waste alkali liquor treatment device, the alkali liquor storage tank and the stirring leaching tank in a circulating manner through pipelines; the comprehensive utilization of the alkali liquor is realized, and the resources are saved.
The crushing and screening system is a three-level crushing and screening system and comprises a first-level crusher, a first-level screening machine, a second-level crusher, a second-level screening machine, a third-level crusher and a third-level screening machine; one-level breaker and one-level screening machine cyclic connection, second grade breaker and second grade screening machine cyclic connection, tertiary breaker and tertiary screening machine cyclic connection through multistage crushing screening system, improve the broken condition in raw ore deposit.
The high-content impurity complicated difficult bauxite ore sends into the primary crusher through forklift and belt from the raw ore storehouse, sieve through the primary screening machine after the coarse breaking, the oversize part returns the primary crusher, the subsieve fraction goes into the secondary crusher and carries out the fine crushing, the ore after the fine crushing passes through the secondary screening machine and sieves, the oversize part returns the secondary crusher, the subsieve fraction goes into tertiary crusher and carries out the fine crushing, the ore after the fine crushing passes through tertiary screening machine and sieves, the oversize part returns tertiary crusher, the subsieve fraction goes into the ore mill and grinds and obtains the raw powder ore, the raw powder ore passes through the air separator and selects the back, the coarse grain returns the ore mill and regrinds, the fine-grained powder ore that accords with the requirement passes through the pipeline and carries to the powder storehouse, and keeps in to the surge bin.
The raw powder ore produced by the ore crushing and grinding system is fed from the buffer bin through the pipeline feeder, then enters the suspension roasting furnace supplied with heat through the hot blast stove after being preheated by the cyclone preheater to be roasted and desulfurized, and the generated high-temperature powder ore is cooled by the cyclone cooler to obtain low-temperature low-sulfur fine powder ore and is sent into the fine ore bin through the pipeline. Meanwhile, high-temperature flue gas generated by the suspension roasting furnace and hot air replaced in the cyclone cooler return to the preheater to preheat raw ore powder, and flue gas generated by the cyclone preheater and the hot blast stove is purified by a flue gas purification device and then discharged.
The low-sulfur fine ore obtained through the ore roasting desulfurization system is conveyed to a No. 1 pulp mixing barrel from a fine ore bin through a pipeline to be mixed into ore pulp with certain concentration, then the ore pulp is sent to a wet magnetic separator for magnetic separation and iron removal, a low-sulfur low-iron ore concentrate mixed material and a magnetic substance are obtained after iron removal, the low-sulfur low-iron ore concentrate mixed material is sent to a No. 1 filter through a pipeline for dehydration, the low-sulfur low-iron ore concentrate is obtained after dehydration, and the magnetic substance is stored as a byproduct.
Sending the low-sulfur low-iron concentrate obtained by the wet magnetic separation system into a No. 2 pulp mixing barrel through a pipeline to prepare pulp, then sending the pulp into a stirring leaching tank, adding alkali liquor into an alkali liquor storage tank, carrying out alkali leaching desiliconization, and filtering the pulp by a No. 2 filter to obtain a low-sulfur low-silicon low-iron concentrate finished product and waste alkali liquor; and the waste alkali liquor is treated by the waste alkali liquor treatment device and then returns to the alkali liquor storage tank, and is circularly used for alkali leaching desilicification.
The utility model discloses the comprehensive ore dressing that realizes the difficult bauxite of utilizing of high sulphur high iron high silicon is upgraded and is handled, finally generates high-quality low sulphur low silicon low iron bauxite concentrate and by-product magnetism thing, and the cyclic utilization of heat energy and the cyclic utilization of alkali lye in whole system realize the comprehensive utilization of resource simultaneously.
Drawings
Fig. 1 is a schematic diagram of the system structure of the present invention.
Detailed Description
The following description will further explain embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the wet-process mineral separation and quality improvement treatment system for high-impurity bauxite of the present invention comprises an ore crushing and grinding system, an ore roasting and desulfurizing system, a wet-process magnetic separation system and an alkaline leaching and desiliconization system;
the ore crushing and grinding system comprises a primary crusher 2, a primary vibrating screening machine 3, a secondary crusher 4, a secondary vibrating screening machine 5, a tertiary crusher 6, a tertiary vibrating screening machine 7, an ore grinding machine 8 and a winnowing machine 9 which are connected in sequence; the primary crusher 2 is circularly connected with the primary vibrating screening machine 3 through a belt, the secondary crusher 4 is circularly connected with the secondary vibrating screening machine 5 through a belt, the tertiary crusher 6 is circularly connected with the tertiary vibrating screening machine 7 through a belt, and the ore grinding machine 8 is circularly connected with the air separation machine 9 through a pipeline; the rear end of the winnowing machine 9 is connected with a powder bin 10.
The ore roasting desulfurization system comprises a feeder 15, a cyclone preheater 16, a suspension roasting furnace 17 and a cyclone cooler 18 which are connected in sequence through pipelines; the cyclone preheater 16 is also connected with a flue gas purification device 20, the suspension roasting furnace 17 is connected with a hot blast furnace 19, the hot blast furnace 19 is connected with the flue gas purification device 20, and the cyclone cooler 18 is circularly connected with the cyclone preheater 16 through a pipeline; the rear end of the cyclone cooler 18 is connected with a concentrate bin 21; in actual use, the flue gas purification device 20 is a desulfurizing tower.
The wet magnetic separation system comprises a No. 1 size mixing barrel 30, a wet magnetic separator 31 and a No. 1 filter 32 which are connected in sequence; the No. 1 size mixing barrel 30 is connected with the concentrate bin 21;
the leaching and desiliconizing system comprises a No. 2 size mixing barrel 36, a stirring leaching tank 37 and a No. 2 filter 38 which are connected in sequence; the No. 2 filter 38 is also sequentially connected with a waste alkali liquid treatment device 39, an alkali liquid storage tank 40 and an agitation leaching tank 37 in a circulating way through pipelines; in actual use, the waste alkali liquid treatment device 39 is a glycerin pot.
Conveying the high-sulfur, high-iron and high-silicon bauxite which is difficult to utilize from a raw ore bin 1 to a primary crusher 2 through a forklift and a belt to be crushed to be less than 150mm, screening the coarsely crushed ore by a primary vibrating screening machine 3, and returning the ore with the granularity of more than 150mm to the primary crusher 2 through the belt to be crushed again; ore with the granularity of less than 150mm enters a secondary crusher 4 through a belt, the ore after secondary crushing is screened by a secondary vibrating screening machine 5, and the ore with the granularity of more than 50mm returns to the secondary crusher 4 through the belt to be crushed again; ore with the granularity of less than 50mm enters a third-level crusher 6 through a belt to be finely crushed, the finely crushed ore is screened by a third-level vibrating screening machine 7, and the ore with the granularity of more than 5mm returns to the third-level crusher 6 through the belt to be crushed again; ore with the particle size smaller than 5mm enters an ore grinding machine 8 through a belt to be ground into mineral powder, the mineral powder is separated by a winnowing machine, and the ore with the particle size larger than 0.15mm returns to the ore grinding machine 8 through a pipeline; the particle size less than 0.15mm enters the powder bin 10 through a pipeline and then is sent to the buffer bin 14.
The raw fine ore produced by the ore crushing and grinding system is fed from the buffer bin 14 through the pipeline feeder 15, is preheated by the cyclone preheater 16, enters the suspension roasting furnace 17 supplied with heat through the hot blast furnace 19, is roasted and desulfurized at 500-950 ℃, and the produced high-temperature fine ore is cooled by the cyclone cooler 18 to obtain low-temperature low-sulfur fine ore powder, and is sent to the fine ore bin 21 through the pipeline. Meanwhile, the high-temperature flue gas generated by the suspension roasting furnace 17 and the hot air replaced in the cyclone cooler 18 return to the preheater 16 to preheat the raw ore powder, and the flue gas generated by the cyclone preheater 16 and the hot blast heater 19 is purified by the flue gas purification device 20 and then discharged.
The low-sulfur fine ore obtained by the ore roasting desulfurization system is conveyed to a No. 1 pulp mixing barrel 30 from a fine ore bin 21 through a pipeline, water with a certain proportion is added to mix the ore pulp with the solid concentration of 5-20%, then the ore pulp is sent to a wet magnetic separator 31 to be subjected to magnetic separation and iron removal, a low-sulfur low-iron ore concentrate mixed material and a magnetic substance are obtained after iron removal, the low-sulfur low-iron ore concentrate mixed material is sent to a filter 32 through a pipeline to be dehydrated, the low-sulfur low-iron ore concentrate is obtained after dehydration, and the magnetic substance is stored as a byproduct.
Sending the low-sulfur low-iron concentrate obtained by the wet magnetic separation system into a No. 2 pulp mixing barrel 36 through a pipeline, adding a certain proportion of water to prepare an ore pulp with a liquid-solid ratio of 6-10; the waste alkali liquor is treated by the waste alkali liquor treatment device 39 and then returns to the alkali liquor storage tank 40 for recycling in the alkali leaching desilicication.
It should be noted that: in the present invention, the mentioned devices or equipments are all products in the prior art, and all the devices or equipments can be purchased from the market.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and these embodiments are still within the scope of the invention.
Claims (4)
1. A wet-process ore dressing quality-improving treatment system for high-impurity bauxite is characterized in that: the system comprises an ore crushing and grinding system, an ore roasting and desulfurizing system, a wet magnetic separation system and a leaching and desiliconizing system which are connected in sequence;
the ore crushing and grinding system comprises a crushing and screening system and a grinding and selecting system; the crushing and screening system is a three-stage screening system consisting of a crusher and a screening machine; the grinding and sorting system comprises a grinding machine (8) and a winnowing machine (9) which are connected in a circulating way; the sieving machine and the ore grinding machine are connected through a belt, and the rear end of the winnowing machine (9) is connected with a powder bin (10);
the ore roasting desulfurization system comprises a feeding machine (15), a cyclone preheater (16), a suspension roasting furnace (17) and a cyclone cooler (18) which are connected in sequence through pipelines; the feeding machine (15) is connected with the powder bin (10); the cyclone preheater is also connected with a flue gas purification device (20), the suspension roasting furnace (17) is connected with a hot blast stove (19), the hot blast stove (19) is connected with the flue gas purification device (20), and the cyclone cooler (18) is circularly connected with the cyclone preheater (16) through a pipeline; the rear end of the cyclone cooler (18) is connected with a concentrate bin (21);
the wet magnetic separation system comprises a No. 1 size mixing barrel (30), a wet magnetic separator (31) and a No. 1 filter (32) which are connected in sequence; the No. 1 filter (32) is circularly connected with the No. 1 size mixing barrel (30);
the leaching and desiliconizing system comprises a No. 2 size mixing barrel (26), a stirring leaching tank (37) and a No. 2 filter (38) which are connected in sequence; the No. 2 filter (38) is also circularly connected with the waste alkali liquor treatment device (39), the alkali liquor storage tank (40) and the stirring leaching tank (37) in turn through pipelines.
2. The high impurity bauxite wet beneficiation and upgrading treatment system according to claim 1, characterized in that: the tertiary screening system includes: the device comprises a primary crusher (2), a primary screening machine (3), a secondary crusher (4), a secondary screening machine (5), a tertiary crusher (6) and a tertiary screening machine (7); the primary crusher (2) is circularly connected with the primary screening machine (3), the secondary crusher (4) is circularly connected with the secondary screening machine (5), and the tertiary crusher (6) is circularly connected with the tertiary screening machine (7).
3. The high impurity bauxite wet beneficiation and upgrading treatment system according to claim 1, characterized in that: the flue gas purification device (20) is a desulfurizing tower.
4. The high impurity bauxite wet beneficiation and upgrading treatment system according to claim 1, characterized in that: the waste alkali liquid treatment device (39) is a glycerol pot.
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| CN202122475966.9U CN218742376U (en) | 2021-10-14 | 2021-10-14 | Wet-process ore dressing quality-improving treatment system for high-impurity bauxite |
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