CN103204510B - Spodumene roasting transformation method - Google Patents

Spodumene roasting transformation method Download PDF

Info

Publication number
CN103204510B
CN103204510B CN201310142969.8A CN201310142969A CN103204510B CN 103204510 B CN103204510 B CN 103204510B CN 201310142969 A CN201310142969 A CN 201310142969A CN 103204510 B CN103204510 B CN 103204510B
Authority
CN
China
Prior art keywords
air duct
hot air
triphane
rotary kiln
grades
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.)
Expired - Fee Related
Application number
CN201310142969.8A
Other languages
Chinese (zh)
Other versions
CN103204510A (en
Inventor
马永全
黄琳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHENGDU ZENITH MECHANICAL ELECTRONICS Co Ltd
Original Assignee
CHENGDU ZENITH MECHANICAL ELECTRONICS Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CHENGDU ZENITH MECHANICAL ELECTRONICS Co Ltd filed Critical CHENGDU ZENITH MECHANICAL ELECTRONICS Co Ltd
Priority to CN201310142969.8A priority Critical patent/CN103204510B/en
Publication of CN103204510A publication Critical patent/CN103204510A/en
Application granted granted Critical
Publication of CN103204510B publication Critical patent/CN103204510B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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

Landscapes

  • Furnace Details (AREA)
  • Manufacture And Refinement Of Metals (AREA)

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

A kind of method that triphane roasting makes the transition
Technical field
The present invention is specifically related to the method for a kind of triphane roasting transition.
Background technology
Triphane needs to carry out process transition before carrying out acidification, and namely α triphane changes into beta spodumene; Existing domestic transformation technology mostly adopts rotary kiln baking to transform; Triphane requires that roasting time is long transition, is not suitable for anxious burning.And the clinkering zone length of rotary kiln is relevant with burner flame length adjustment scope, the kiln of band preheater is generally the 8-10 of rotary kiln diameter doubly, and dry method hollow rotary kiln is generally the 5-7 of rotary kiln diameter doubly.For this feature, when kiln footpath, gradient (setting kiln inclination alpha=2 °) are certain, for ensureing roasting time, can only suitably reduce kiln speed, and along with kiln prompt drop low, reduce material rolling number of times and lift height, thus decrease material and air flow contacts and the heat transfer by conduction carried out and transmission of heat by convection probability, therefore, process transition adopting existing rotary kiln technology to carry out triphane reduces rotary kiln output, can not increase substantially single cover system production capacity.
Summary of the invention
The object of the invention is to be directed to the deficiencies in the prior art, a kind of method providing triphane roasting to make the transition, this method solve in prior art and adopt that rotary kiln carries out process transition of triphane and the production capacity that causes is not high, the problem of the wasting of resources.
In order to reach foregoing invention object, the technical solution used in the present invention is: a kind of method providing triphane roasting to make the transition, is characterized in that, comprise the following steps:
A, triphane raw ore is carried out drying, ore grinding, make triphane fineness be below 100 orders, water content < 4%;
B, the triphane obtained by step a are placed in whirlwind pre-heating system and carry out suspension preheating to 650 DEG C;
C, the product that step b obtains is delivered in rotary kiln is heated to 950 ~ 1050 DEG C again, make triphane change into beta spodumene by α triphane.
In the method for triphane roasting of the present invention transition, the triphane obtained by step a is placed in the step that whirlwind pre-heating system carries out suspension preheating and is:
I, the triphane obtained by step a are delivered in one cyclonic cylinder, are delivered to one-level hot air duct and carry out suspension preheating after one cyclonic cylinder is collected by one-level material pipe, then by the hot blast in this hot air duct by material web in secondary rotary air duct;
II, secondary rotary air duct carries out suspension preheating by being delivered to secondary hot air duct by secondary material pipe after material collection, then by the hot blast in this hot air duct by material web to three grade cyclone cylinder;
III, three grades of cyclone cylinders carry out suspension preheating to 650 DEG C by after material collection by three stage material Cemented filling to three grade hot air ducts, again by the hot blast in this hot air duct by material web in Category Four cyclone cylinder, Category Four cyclone cylinder will be delivered in rotary kiln after material collection, complete the suspension preheating to material.
Described triphane raw ore is domestic lithium concentrate, and its chemical composition 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 composition 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 the one cyclonic cylinder, secondary rotary air duct, three grades of cyclone cylinders and the Category Four cyclone cylinder that connect successively; The bottom of one cyclonic cylinder is provided with one-level material pipe, and one-level material pipe is connected with one-level hot air duct; The top of secondary rotary air duct is connected with one-level hot air duct, and the bottom of secondary rotary air duct is provided with secondary material pipe, and secondary material pipe is connected with secondary hot air duct; The top of three grades of cyclone cylinders is connected with secondary hot air duct, and the bottom of three grades of cyclone cylinders 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 cylinder is connected with three grades of hot air ducts, and the top of Category Four cyclone cylinder is connected with rotary kiln.
Triphane raw ore carries out drying in hammer dryer.
In sum, the present invention adopts whirlwind pre-heating system to utilize rotary kiln waste heat to carrying out material front preheating transition, this system material route and hot blast route counter movement, the hot blast in rotary kiln is utilized to heat material, the spent air temperture in rotary kiln is made to be down to less than 150 DEG C, the function of rotary kiln is shifted out simultaneously, at guarantee material while rotary kiln baking, increase substantially rotary kiln output, not only take full advantage of the waste resource of rotary kiln, reduce costs, and solve the problem of single cover system production capacity, have larger using value.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of whirlwind pre-heating system of the present invention.
Wherein, 1, one cyclonic cylinder; 101, one-level material pipe; 102, one-level hot air duct; 2, secondary rotary air duct; 201, secondary material pipe; 202, secondary hot air duct; 3, three grades of cyclone cylinders; 301, three stage material pipelines; 302, three grades of hot air ducts; 4, Category Four cyclone cylinder; 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 described in detail:
Embodiment 1
(1) domestic triphane raw ore is carried out pre-treatment, namely carrying out being dried to water content in hammer dryer is 3%, then to carry out ore grinding to triphane fineness be below 100 orders; Wherein, the chemical composition 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) be placed in whirlwind pre-heating system again and carry out suspension preheating, the step of suspension preheating is:
I, pretreated triphane to be delivered in one cyclonic cylinder 1 from hammer dryer 6, be delivered to one-level hot air duct 102 by one-level material pipe 101 and carry out suspension preheating after one cyclonic cylinder 1 is collected, then by the hot blast in this hot air duct by material web in secondary rotary air duct 2;
II, secondary rotary air duct 2 carries out suspension preheating by being delivered to secondary hot air duct 202 by secondary material pipe 201 after material collection, then by the hot blast in this hot air duct by material web to three grade cyclone cylinder 3;
III, three grades of cyclone cylinders 3 carry out suspension preheating to 650 DEG C by being delivered to three grades of hot air ducts 302 by three stage material pipelines 301 after material collection, again by the hot blast in this hot air duct by material web in Category Four cyclone cylinder 4, Category Four cyclone cylinder 4 will be delivered to after material collection in rotary kiln 5, completes the suspension preheating to material; Material route and hot blast route counter movement in this suspension preheating system, utilize the tail waste gas of rotary kiln 5 to heat material as the oven dry thermal source of raw material simultaneously, achieve making full use of rotary kiln resource.
Again the mass transport of suspension preheating to 650 DEG C is heated to 950 DEG C to rotary kiln 5, makes triphane change into beta spodumene by α triphane.
Above-mentioned whirlwind pre-heating system comprises the one cyclonic cylinder 1, secondary rotary air duct 2, three grades of cyclone cylinders 3 and the Category Four cyclone cylinder 4 that connect successively; The bottom of one cyclonic cylinder 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 rotary air duct 2 is connected with one-level hot air duct 102, and the bottom of secondary rotary air duct 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 cyclone cylinders 3 is connected with secondary hot air duct 202, and the bottom of three grades of cyclone cylinders 3 is provided with three stage material pipeline 301, three stage material pipelines 301 and is connected with three grades of hot air ducts 302; The top of Category Four cyclone cylinder 4 is connected with three grades of hot air ducts 302, and the top of Category Four cyclone cylinder 4 is connected with rotary kiln 5.
Embodiment 2
(1) Australia lithium concentrate is carried out pre-treatment, namely carrying out being dried to water content in hammer dryer 6 is 1%, then to carry out ore grinding to triphane fineness be below 100 orders; Wherein, its chemical composition 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) be placed in whirlwind pre-heating system again and carry out suspension preheating, the step of suspension preheating is:
I, pretreated triphane to be delivered in one cyclonic cylinder 1 from hammer dryer 6, be delivered to one-level hot air duct 102 by one-level material pipe 101 and carry out suspension preheating after one cyclonic cylinder 1 is collected, then by the hot blast in this hot air duct by material web in secondary rotary air duct 2;
II, secondary rotary air duct 2 carries out suspension preheating by being delivered to secondary hot air duct 202 by secondary material pipe 201 after material collection, then by the hot blast in this hot air duct by material web to three grade cyclone cylinder 3;
III, three grades of cyclone cylinders 3 carry out suspension preheating to 650 DEG C by being delivered to three grades of hot air ducts 302 by three stage material pipelines 301 after material collection, again by the hot blast in this hot air duct by material web in Category Four cyclone cylinder 4, Category Four cyclone cylinder 4 will be delivered to after material collection in rotary kiln 5, completes the suspension preheating to material; Material route and hot blast route counter movement in this suspension preheating system, utilize the tail waste gas of rotary kiln 5 to heat material as the oven dry thermal source of raw material simultaneously, achieve making full use of rotary kiln resource.
Again the mass transport of suspension preheating to 650 DEG C is heated to 1000 DEG C to rotary kiln 5, makes triphane change into beta spodumene by α triphane.
Above-mentioned whirlwind pre-heating system comprises the one cyclonic cylinder 1, secondary rotary air duct 2, three grades of cyclone cylinders 3 and the Category Four cyclone cylinder 4 that connect successively; The bottom of one cyclonic cylinder 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 rotary air duct 2 is connected with one-level hot air duct 102, and the bottom of secondary rotary air duct 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 cyclone cylinders 3 is connected with secondary hot air duct 202, and the bottom of three grades of cyclone cylinders 3 is provided with three stage material pipeline 301, three stage material pipelines 301 and is connected with three grades of hot air ducts 302; The top of Category Four cyclone cylinder 4 is connected with three grades of hot air ducts 302, and the top of Category Four cyclone cylinder 4 is connected with rotary kiln 5.
Although describe in detail the specific embodiment of the present invention in conjunction with specific embodiments, it is not the restriction to this patent protection domain.In claims limited range, the various amendment that those skilled in the art can make without creative work or adjustment are still by the protection of this patent.

Claims (3)

1. triphane roasting transition a method, it is characterized in that, comprise the following steps:
A, triphane raw ore is carried out drying, ore grinding, make triphane fineness be below 100 orders, water content < 4%;
B, the triphane obtained by step a are placed in whirlwind pre-heating system and carry out suspension preheating to 650 DEG C;
C, the product that step b obtains is delivered in rotary kiln is heated to 950 ~ 1050 DEG C again, make triphane change into beta spodumene by α triphane;
Wherein, the triphane that step a obtains being placed in the step that whirlwind pre-heating system carries out suspension preheating is:
I, the triphane obtained by step a are delivered in one cyclonic cylinder, are delivered to one-level hot air duct and carry out suspension preheating after one cyclonic cylinder is collected by one-level material pipe, then by the hot blast in this hot air duct by material web in secondary rotary air duct;
II, secondary rotary air duct carry out suspension preheating by being delivered to secondary hot air duct by secondary material pipe after material collection, then by the hot blast in this hot air duct by material web to three grade cyclone cylinder;
III, three grades of cyclone cylinders carry out suspension preheating to 650 DEG C by after material collection by three stage material Cemented filling to three grade hot air ducts, again by the hot blast in this hot air duct by material web in Category Four cyclone cylinder, Category Four cyclone cylinder will be delivered in rotary kiln after material collection, complete the suspension preheating to material.
2. the method for triphane roasting according to claim 1 transition, is characterized in that: described whirlwind pre-heating system comprises the one cyclonic cylinder, secondary rotary air duct, three grades of cyclone cylinders and the Category Four cyclone cylinder that connect successively; The bottom of one cyclonic cylinder is provided with one-level material pipe, and one-level material pipe is connected with one-level hot air duct; The top of secondary rotary air duct is connected with one-level hot air duct, and the bottom of secondary rotary air duct is provided with secondary material pipe, and secondary material pipe is connected with secondary hot air duct; The top of three grades of cyclone cylinders is connected with secondary hot air duct, and the bottom of three grades of cyclone cylinders 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 cylinder is connected with three grades of hot air ducts, and the top of Category Four cyclone cylinder is connected with rotary kiln.
3. the method for triphane roasting according to claim 1 transition, is characterized in that: triphane raw ore carries out drying in hammer dryer.
CN201310142969.8A 2013-04-24 2013-04-24 Spodumene roasting transformation method Expired - Fee Related CN103204510B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310142969.8A CN103204510B (en) 2013-04-24 2013-04-24 Spodumene roasting transformation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310142969.8A CN103204510B (en) 2013-04-24 2013-04-24 Spodumene roasting transformation method

Publications (2)

Publication Number Publication Date
CN103204510A CN103204510A (en) 2013-07-17
CN103204510B true CN103204510B (en) 2015-04-15

Family

ID=48751957

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310142969.8A Expired - Fee Related CN103204510B (en) 2013-04-24 2013-04-24 Spodumene roasting transformation method

Country Status (1)

Country Link
CN (1) CN103204510B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103922355B (en) * 2014-04-22 2016-04-13 四川卡森科技有限公司 A kind of device and preparation technology producing triphane
CN107739847A (en) * 2017-10-16 2018-02-27 福州大学 A kind of crystal formation conversion method of natural spodumene suspension roasting
CA3191181A1 (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

Family Cites Families (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
CN101948124B (en) * 2010-09-09 2012-09-19 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
CN102874850B (en) * 2012-10-25 2014-03-19 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

Also Published As

Publication number Publication date
CN103204510A (en) 2013-07-17

Similar Documents

Publication Publication Date Title
CN103204510B (en) Spodumene roasting transformation method
CN201583131U (en) Afterheat utilization system of tunnel furnace
CN107435928A (en) A kind of internal heat type domestic garbage pyrolysis system
CN205825038U (en) A kind of internal heat type domestic garbage pyrolysis system
CN204085169U (en) A kind of mullite brick production line special tunnel kiln afterheat energy-saving system
CN201621973U (en) Electric furnace flue gas waste heat recovery utilization device
CN204574837U (en) Roller kilns waste heat combustion air heating apparatus
CN203413968U (en) Kiln fume-recycling green body dryer
CN204999810U (en) A waste heat utilization system for preheater heating
CN103353237A (en) Kiln gas recovery body drying device
CN203798141U (en) Drying calcining plant
CN105485670B (en) The optimization combustion method and special equipment of a kind of alumina producer gaseous pollutant control
CN206613680U (en) A kind of waste heat recovery and baking finish drying device
CN103884192A (en) Device for preheating raw materials by microwaves and recombination energy
CN106091672B (en) Rotary reaction furnace hot air heating system
CN206410539U (en) A kind of kiln waste heat utilization system
CN205261916U (en) High -efficient heat utilization structure of pottery hot -blast furnace
CN204310963U (en) Gypsum powder-frying machine
CN209027088U (en) A kind of biogas hot-air furnace
CN204227920U (en) A kind of furnace construction with heat recovery function
CN204298230U (en) Glass furnace waste heat recycling system
CN203824343U (en) Pre-heating system for loading and burning porcelain blank
CN202485028U (en) Air preheater for gas chained preheating furnaces
CN207095313U (en) A kind of device using waste gas residual heat drying ceramic blank
CN204987794U (en) Heated air circulation drying -machine

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150415

Termination date: 20160424