CN103204510A - Spodumene roasting transformation method - Google Patents

Spodumene roasting transformation method Download PDF

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Publication number
CN103204510A
CN103204510A CN2013101429698A CN201310142969A CN103204510A CN 103204510 A CN103204510 A CN 103204510A CN 2013101429698 A CN2013101429698 A CN 2013101429698A CN 201310142969 A CN201310142969 A CN 201310142969A CN 103204510 A CN103204510 A CN 103204510A
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triphane
hot air
whirlwind
tube
level
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CN2013101429698A
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CN103204510B (en
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马永全
黄琳
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CHENGDU ZENITH MECHANICAL ELECTRONICS Co Ltd
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CHENGDU ZENITH MECHANICAL ELECTRONICS Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Abstract

The invention discloses a spodumene roasting transformation method. The method is characterized by comprising three steps, namely pretreatment of raw spodumene, suspended preheating of the pretreated spodumene and heating transformation in a rotary kiln. The material is preheated before transformation by adopting a cyclone preheating system and using the waste heat of the rotary kiln, the material route and the hot air route of the system are reverse, and the material is heated by using the hot air in the rotary kiln, so that the waste gas temperature in the rotary kiln is reduced to be less than 150 DEG C; and the functions of the rotary kiln are shifted out, so that roasting of the material in the rotary kiln is ensured, the yield of the rotary kiln is greatly improved at the same time, the waste resource of the rotary kiln is fully utilized, the cost is reduced, the problem of the capacity of the single system is solved, and great application value is realized.

Description

The method that a kind of triphane roasting makes the transition
Technical field
The present invention is specifically related to the method that a kind of triphane roasting makes the transition.
Background technology
The triphane processing that before carrying out acidification, needs to make the transition, namely the α triphane changes into beta spodumene; Existing domestic transformation technology mostly adopts rotary kiln baking to transform; Triphane requires roasting time long transition, is not suitable for anxious burning.And the clinkering zone length of rotary kiln is relevant with burner flame length adjustment scope, and the kiln of band preheater is generally 8-10 times of rotary kiln diameter, and dry method hollow rotary kiln is generally 5-7 times of rotary kiln diameter.At these characteristics, under kiln footpath, gradient (set kiln inclination alpha=2 °) certain situation, for guaranteeing roasting time, kiln speed be can only suitably reduce, and along with the kiln prompt drop is low, material rolling number of times and lift height reduced, thereby reduced that material contacts with air-flow and the heat transfer by conduction and the transmission of heat by convection probability that carry out, therefore, handle and reduce rotary kiln output the transition of adopting existing rotary kiln technology to carry out triphane, can not increase substantially single cover system production capacity.
Summary of the invention
The objective of the invention is to be directed to the deficiencies in the prior art, a kind of triphane roasting method of transition is provided, this method has solved that the production capacity of handling transition that the available technology adopting rotary kiln carries out triphane and causing is not high, the problem of the wasting of resources.
In order to reach the foregoing invention purpose, the technical solution used in the present invention is: the method that provides a kind of triphane roasting to make the transition, it is characterized in that, and may further comprise the steps:
A, the triphane raw ore is carried out drying, ore grinding, making the triphane fineness is below 100 orders, water content＜4%;
B, the triphane that step a is obtained place the whirlwind pre-heating system to carry out suspension preheating to 650 ℃;
C, the product that again step b is obtained are delivered to and are heated to 950～1050 ℃ in the rotary kiln, make triphane change into beta spodumene by the α triphane.
In the method that triphane roasting of the present invention makes the transition, the step that the triphane that step a is obtained places the whirlwind pre-heating system to carry out suspension preheating is:
I, the triphane that step a is obtained are delivered in the one-level whirlwind tube, after one-level whirlwind tube is collected, be delivered to the one-level hot air duct by the one-level material pipe and carry out suspension preheating, again by the hot blast in this hot air duct with material web to secondary whirlwind tube;
II, secondary whirlwind tube are delivered to the secondary hot air duct by the secondary material pipe after with material collection and carry out suspension preheating, again by the hot blast in this hot air duct with in material web to the three grade whirlwind tube;
III, three grades of whirlwind tubes carry out suspension preheating to 650 ℃ by three stage material pipe-line transportation to three grade hot air ducts after with material collection, again by the hot blast in this hot air duct with material web to the Category Four cyclone tube, the Category Four cyclone tube is delivered in the rotary kiln after with material collection, finishes the suspension preheating to material.
Described triphane raw ore is domestic lithium concentrate, and its chemical ingredients is: Li 2O 5.0～6.0, Fe 2O 32.4～3.0, K 2O 0.21～0.36, Na 2O 0.57～0.96, Al 2O 322.7～23.56, SiO 264.0～67.0, CaO 1.2～1.6, MnO 0.2～0.4 and water 13.0～16.0.
Described triphane raw ore is Australia lithium concentrate, and its chemical ingredients is: Li 2O 6.0, Fe 2O 3≤ 0.80, K 2O 0.30, Na 2O 0.25, Al 2O 322.0, SiO 268.0, CaO 0.25, MnO 0.10, TiO 20.10, P 2O 50.20 and water 6.0.
Described whirlwind pre-heating system comprises successively the one-level whirlwind tube that connects, secondary whirlwind tube, three grades of whirlwind tubes and Category Four cyclone tube; The bottom of one-level whirlwind tube is provided with the one-level material pipe, and the one-level material pipe is connected with the one-level hot air duct; The top of secondary whirlwind tube is connected with the one-level hot air duct, and the bottom of secondary whirlwind tube is provided with the secondary material pipe, and the secondary material pipe is connected with the secondary hot air duct; The top of three grades of whirlwind tubes is connected with the secondary hot air duct, and the bottom of three grades of whirlwind tubes is provided with three stage material pipelines, and three stage material pipelines are connected with three grades of hot air ducts; The top of Category Four cyclone tube is connected with three grades of hot air ducts, and the top of Category Four cyclone tube is connected with rotary kiln.
The triphane raw ore carries out drying in the hammer dryer.
In sum, the present invention adopts the whirlwind pre-heating system to utilize the rotary kiln waste heat to carrying out material preheating before transition, this system's material route and the hot blast route is reverse carries out, utilize the hot blast in the rotary kiln that material is heated, spent air temperture in the rotary kiln is down to below 150 ℃, function with rotary kiln shifts out simultaneously, guaranteeing that material is in rotary kiln baking, increase substantially rotary kiln output, not only taken full advantage of the waste resource of rotary kiln, reduce cost, and solved the problem of single cover system production capacity, bigger using value is arranged.
Description of drawings
Fig. 1 is the structured flowchart of whirlwind pre-heating system of the present invention.
Wherein, 1, one-level whirlwind tube; 101, one-level material pipe; 102, one-level hot air duct; 2, secondary whirlwind tube; 201, secondary material pipe; 202, secondary hot air duct; 3, three grades of whirlwind tubes; 301, three stage material pipelines; 302, three grades of hot air ducts; 4, Category Four cyclone tube; 401, level Four material pipe; 402, level Four hot air duct; 5, rotary kiln; 6, hammer dryer.
Embodiment
Below in conjunction with specific embodiment the specific embodiment of the present invention is done and to be described in detail:
Embodiment 1
(1) domestic triphane raw ore is carried out pre-treatment, namely being dried to water content in the hammer dryer is 3%, and carrying out ore grinding to triphane fineness again is below 100 orders; Wherein, the chemical ingredients of domestic triphane raw ore is: Li 2O 5.0, Fe 2O 32.4, K 2O 0.21, Na 2O 0.57, Al 2O 322.7, SiO 264.0, CaO1.2, MnO 0.2 and water 13.0.
(2) place the whirlwind pre-heating system to carry out suspension preheating again, the step of suspension preheating is:
I, pretreated triphane is delivered to from hammer dryer 6 in the one-level whirlwind tube 1, after one-level whirlwind tube 1 is collected, be delivered to one-level hot air duct 102 by one-level material pipe 101 and carry out suspension preheating, again by the hot blast in this hot air duct with material web to secondary whirlwind tube 2;
II, secondary whirlwind tube 2 carry out suspension preheating with being delivered to secondary hot air duct 202 by secondary material pipe 201 after the material collection, again by the hot blast in this hot air duct with in material web to the three grade whirlwind tube 3;
III, three grades of whirlwind tubes 3 are carried out suspension preheating to 650 ℃ with being delivered to three grades of hot air ducts 302 by three stage material pipelines 301 after the material collection, again by the hot blast in this hot air duct with material web to Category Four cyclone tube 4, Category Four cyclone tube 4 will be delivered to after the material collection in the rotary kiln 5, finishes the suspension preheating to material; Material route and hot blast route are reverse in this suspension preheating system carries out, and the tail waste gas that utilizes rotary kiln 5 simultaneously heats material as the oven dry thermal source of raw material, has realized taking full advantage of the rotary kiln resource.
Mass transport with suspension preheating to 650 ℃ is heated to 950 ℃ to rotary kiln 5 again, makes triphane change into beta spodumene by the α triphane.
Above-mentioned whirlwind pre-heating system comprises successively the one-level whirlwind tube 1 that connects, secondary whirlwind tube 2, three grades of whirlwind tubes 3 and Category Four cyclone tube 4; The bottom of one-level whirlwind tube 1 is provided with one-level material pipe 101, and one-level material pipe 101 is connected with one-level hot air duct 102; The top of secondary whirlwind tube 2 is connected with one-level hot air duct 102, and the bottom of secondary whirlwind tube 2 is provided with secondary material pipe 201, and secondary material pipe 201 is connected with secondary hot air duct 202; The top of three grades of whirlwind tubes 3 is connected with secondary hot air duct 202, and the bottom of three grades of whirlwind tubes 3 is provided with three stage material pipelines, 301, three stage material pipelines 301 and is connected with three grades of hot air ducts 302; The top of Category Four cyclone tube 4 is connected with three grades of hot air ducts 302, and the top of Category Four cyclone tube 4 is connected with rotary kiln 5.
Embodiment 2
(1) Australia lithium concentrate is carried out pre-treatment, namely being dried to water content in hammer dryer 6 is 1%, and carrying out ore grinding to triphane fineness again is below 100 orders; Wherein, its chemical ingredients is: Li 2O 6.0, Fe 2O 30.50, K 2O 0.30, Na 2O 0.25, Al 2O 322.0, SiO 268.0, CaO 0.25, MnO 0.10, TiO 20.10, P 2O 50.20 and water 6.0.
(2) place the whirlwind pre-heating system to carry out suspension preheating again, the step of suspension preheating is:
I, pretreated triphane is delivered to from hammer dryer 6 in the one-level whirlwind tube 1, after one-level whirlwind tube 1 is collected, be delivered to one-level hot air duct 102 by one-level material pipe 101 and carry out suspension preheating, again by the hot blast in this hot air duct with material web to secondary whirlwind tube 2;
II, secondary whirlwind tube 2 carry out suspension preheating with being delivered to secondary hot air duct 202 by secondary material pipe 201 after the material collection, again by the hot blast in this hot air duct with in material web to the three grade whirlwind tube 3;
III, three grades of whirlwind tubes 3 are carried out suspension preheating to 650 ℃ with being delivered to three grades of hot air ducts 302 by three stage material pipelines 301 after the material collection, again by the hot blast in this hot air duct with material web to Category Four cyclone tube 4, Category Four cyclone tube 4 will be delivered to after the material collection in the rotary kiln 5, finishes the suspension preheating to material; Material route and hot blast route are reverse in this suspension preheating system carries out, and the tail waste gas that utilizes rotary kiln 5 simultaneously heats material as the oven dry thermal source of raw material, has realized taking full advantage of the rotary kiln resource.
Mass transport with suspension preheating to 650 ℃ is heated to 1000 ℃ to rotary kiln 5 again, makes triphane change into beta spodumene by the α triphane.
Above-mentioned whirlwind pre-heating system comprises successively the one-level whirlwind tube 1 that connects, secondary whirlwind tube 2, three grades of whirlwind tubes 3 and Category Four cyclone tube 4; The bottom of one-level whirlwind tube 1 is provided with one-level material pipe 101, and one-level material pipe 101 is connected with one-level hot air duct 102; The top of secondary whirlwind tube 2 is connected with one-level hot air duct 102, and the bottom of secondary whirlwind tube 2 is provided with secondary material pipe 201, and secondary material pipe 201 is connected with secondary hot air duct 202; The top of three grades of whirlwind tubes 3 is connected with secondary hot air duct 202, and the bottom of three grades of whirlwind tubes 3 is provided with three stage material pipelines, 301, three stage material pipelines 301 and is connected with three grades of hot air ducts 302; The top of Category Four cyclone tube 4 is connected with three grades of hot air ducts 302, and the top of Category Four cyclone tube 4 is connected with rotary kiln 5.
Though in conjunction with specific embodiments the specific embodiment of the present invention is described in detail, be not to be restriction to this patent protection domain.In claims institute restricted portion, various modifications that those skilled in the art can make without creative work or adjust the protection that still is subjected to this patent.

Claims (6)

1. the method that the triphane roasting makes the transition is characterized in that, may further comprise the steps:
A, the triphane raw ore is carried out drying, ore grinding, making the triphane fineness is below 100 orders, water content＜4%;
B, the triphane that step a is obtained place the whirlwind pre-heating system to carry out suspension preheating to 650 ℃;
C, the product that again step b is obtained are delivered to and are heated to 950～1050 ℃ in the rotary kiln, make triphane change into beta spodumene by the α triphane.
2. the method for triphane roasting according to claim 1 transition, it is characterized in that: the step that the triphane that step a is obtained places the whirlwind pre-heating system to carry out suspension preheating is:
I, the triphane that step a is obtained are delivered in the one-level whirlwind tube, after one-level whirlwind tube is collected, be delivered to the one-level hot air duct by the one-level material pipe and carry out suspension preheating, again by the hot blast in this hot air duct with material web to secondary whirlwind tube;
II, secondary whirlwind tube are delivered to the secondary hot air duct by the secondary material pipe after with material collection and carry out suspension preheating, again by the hot blast in this hot air duct with in material web to the three grade whirlwind tube;
III, three grades of whirlwind tubes carry out suspension preheating to 650 ℃ by three stage material pipe-line transportation to three grade hot air ducts after with material collection, again by the hot blast in this hot air duct with material web to the Category Four cyclone tube, the Category Four cyclone tube is delivered in the rotary kiln after with material collection, finishes the suspension preheating to material.
3. the method for triphane roasting according to claim 1 transition, it is characterized in that: described triphane raw ore is domestic lithium concentrate, and its chemical ingredients is: Li 2O 5.0～6.0, Fe 2O 32.4～3.0, K 2O0.21～0.36, Na 2O 0.57～0.96, Al 2O 322.7～23.56, SiO 264.0～67.0, CaO 1.2～1.6, MnO 0.2～0.4 and water 13.0～16.0.
4. the method for triphane roasting according to claim 1 transition, it is characterized in that: described triphane raw ore is Australia lithium concentrate, and its chemical ingredients is: Li 2O 6.0, Fe 2O 3≤ 0.80, K 2O 0.30, Na 2O0.25, Al 2O 322.0, SiO 268.0, CaO 0.25, MnO 0.10, TiO 20.10, P 2O 50.20 and water 6.0.
5. the method for triphane roasting according to claim 1 transition is characterized in that: described whirlwind pre-heating system comprises the one-level whirlwind tube that connects successively, secondary whirlwind tube, three grades of whirlwind tubes and Category Four cyclone tube; The bottom of one-level whirlwind tube is provided with the one-level material pipe, and the one-level material pipe is connected with the one-level hot air duct; The top of secondary whirlwind tube is connected with the one-level hot air duct, and the bottom of secondary whirlwind tube is provided with the secondary material pipe, and the secondary material pipe is connected with the secondary hot air duct; The top of three grades of whirlwind tubes is connected with the secondary hot air duct, and the bottom of three grades of whirlwind tubes is provided with three stage material pipelines, and three stage material pipelines are connected with three grades of hot air ducts; The top of Category Four cyclone tube is connected with three grades of hot air ducts, and the top of Category Four cyclone tube is connected with rotary kiln.
6. the method for triphane roasting according to claim 1 transition, it is characterized in that: the triphane raw ore carries out drying in the hammer dryer.
CN201310142969.8A 2013-04-24 2013-04-24 Spodumene roasting transformation method Expired - Fee Related CN103204510B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103922355A (en) * 2014-04-22 2014-07-16 四川卡森科技有限公司 Device for producing spodumene and preparation process
CN107739847A (en) * 2017-10-16 2018-02-27 福州大学 A kind of crystal formation conversion method of natural spodumene suspension roasting
CN113023739A (en) * 2021-03-17 2021-06-25 合肥水泥研究设计院有限公司 Spodumene powder suspension preheating calcination crystal form conversion process
CN113493211A (en) * 2021-05-24 2021-10-12 合肥水泥研究设计院有限公司 Spodumene concentrate suspension drying calcination transformation process
WO2022032327A1 (en) * 2020-08-12 2022-02-17 Calix Ltd A method for the pyroprocessing of powders

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101224900A (en) * 2007-10-11 2008-07-23 钟辉 Novel method for spodumene calcining transformation
CN101948124A (en) * 2010-09-09 2011-01-19 江西赣锋锂业股份有限公司 Method for extracting lithium salt from spodumene
CN102765734A (en) * 2012-07-13 2012-11-07 江西赣锋锂业股份有限公司 Method for preparing lithium salts from lithium extracted from spodumene
CN102874850A (en) * 2012-10-25 2013-01-16 西安三瑞实业有限公司 Roasting system and roasting method for lithium-ore acidification by using externally-heated type rotary furnace

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101224900A (en) * 2007-10-11 2008-07-23 钟辉 Novel method for spodumene calcining transformation
CN101948124A (en) * 2010-09-09 2011-01-19 江西赣锋锂业股份有限公司 Method for extracting lithium salt from spodumene
CN102765734A (en) * 2012-07-13 2012-11-07 江西赣锋锂业股份有限公司 Method for preparing lithium salts from lithium extracted from spodumene
CN102874850A (en) * 2012-10-25 2013-01-16 西安三瑞实业有限公司 Roasting system and roasting method for lithium-ore acidification by using externally-heated type rotary furnace

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103922355A (en) * 2014-04-22 2014-07-16 四川卡森科技有限公司 Device for producing spodumene and preparation process
CN107739847A (en) * 2017-10-16 2018-02-27 福州大学 A kind of crystal formation conversion method of natural spodumene suspension roasting
WO2022032327A1 (en) * 2020-08-12 2022-02-17 Calix Ltd A method for the pyroprocessing of powders
CN113023739A (en) * 2021-03-17 2021-06-25 合肥水泥研究设计院有限公司 Spodumene powder suspension preheating calcination crystal form conversion process
CN113493211A (en) * 2021-05-24 2021-10-12 合肥水泥研究设计院有限公司 Spodumene concentrate suspension drying calcination transformation process

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