CN102744144A - Beneficiation method for preparing kyanite ores - Google Patents
Beneficiation method for preparing kyanite ores Download PDFInfo
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- CN102744144A CN102744144A CN2012101689027A CN201210168902A CN102744144A CN 102744144 A CN102744144 A CN 102744144A CN 2012101689027 A CN2012101689027 A CN 2012101689027A CN 201210168902 A CN201210168902 A CN 201210168902A CN 102744144 A CN102744144 A CN 102744144A
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Abstract
The invention specifically relates to a beneficiation method for preparing kyanite ores. The technical scheme includes that step one, the kyanite ores with certain particle sizes are subjected to ore grinding; step two, ore slime which is less than 0.020 mm in ground ore pulp is removed through a desliming bucket; step three, the desliming ore pulp is subjected to continuous wet type strong magnetic sorting; step four, the kyanite ore pulp which is subjected to the strong magnetic sorting is subjected to reselection through a table concentrator to obtain coarse particle kyanite ore concentrates; and step five, a flotation selection process is used for tailings of the table concentrator to obtain fine particle kyanite ore concentrates, and the coarse particle kyanite ore concentrates and the fine particle kyanite ore concentrates are combined and subjected to treatment of acid leaching and iron impurity removing to finally obtain the kyanite ore concentrates. The beneficiation method for preparing the kyanite ores has the advantages of being simple in technological process, easy to operate in scene and low in cost; the grade of aluminum oxide of the obtained kyanite ore concentrates is over 58 wt. %, the recovery rate of kyanite is over 70%, requirement of the country-levelkyanite ore concentrate standard can be satisfied, and the kyanite ore concentrates can be used as high-level refractory materials or raw materials of other industrial products.
Description
Technical field
The invention belongs to the technique of preparing field, be specifically related to a kind of beneficiation method for preparing blue spar ore.
Background technology
Kyanite belongs to high aluminum mineral, can be used as high grade refractory, fireclay mortar, cement and cast anti-goods etc.Kyanite ore medium blue spar content can not directly be used for commercial production generally below 30%, for improving alundum (Al content, reduces wherein impurity to industrial standard, carry out ore dressing to the kyanite ore.
Along with the expansion of industrial utilization scope, kyanite concentrate demand constantly increases, and its growth rate general every year is 5～7%, and growth rate every year is 10% aspect steel and iron industry.The situation that the kyanite development and use exist the products and marketing demand not satisfy the need, supply falls short of demand for high-quality kyanite product, and low quality kyanite product hastens towards saturation, causes market has openings bigger.Therefore should strengthen the dynamics of kyanite ore-dressing technique research, adopt advanced technological process and novel device, medicament, improve product purity, solve the problem of complex utilization of poor value, improve the output of high-grade kyanite.
Flotation, magnetic separation, three kinds of methods of gravity treatment are generally used in the ore dressing of kyanite mineral, the electric separation of employing method is also arranged, but be main with the gravity treatment flotation often.The floatation process of kyanite mainly contains two-stage crushing-primary grinding-a section strong magnetic-table concentration-flotation; Fragmentation-ore grinding-two stages of magnetic separation-flotation; The shortcoming of these technologies is that the rate of recovery is low, productive rate is low, is difficult to obtain to reach the high-purity kyanite concentrate of country-level article simultaneously.
Summary of the invention
The objective of the invention is to overcome above-mentioned technological deficiency, purpose provide a kind of craft science rationally, processing ease, kyanite concentrate grade height and the high blue spar ore beneficiation method of the rate of recovery.
For realizing above-mentioned purpose, technical scheme such as following step that the present invention adopts:
First step ore grinding: with kyanite be crushed to granularity-20mm～-30mm, then it is sent into ore mill, blue spar ore ore grinding to ore fineness is for to account for more than the 80wt% less than 0.074 millimeter;
The second step desliming: the ore pulp behind the ore grinding is sloughed the sludge less than 0.020 millimeter through the desliming bucket;
The 3rd step magnetic separation: the ore pulp after the desliming is removed ferrous contaminants through two road high intensity magnetic separation process;
The 4th step table concentration: the kyanite ore pulp that high intensity magnetic separation is crossed adopts table concentration to obtain coarse granule kyanite concentrate
The 5th step flotation: the floatation process that the table concentration mine tailing employing one of having selected coarse granule kyanite concentrate is slightly swept three essences; Mine tailing after promptly roughly selecting carries out once purging selection; Mine tailing after scanning drains into the mine tailing storehouse as true tailings; Concentrate after scanning with roughly select concentrate and merge and to carry out selectedly, cleaner tailings returns and roughly selects operation for the first time for the first time, cleaner tailings returns selected operation for the first time for the second time; Cleaner tailings returns selected operation for the second time for the third time, becomes fine grained kyanite concentrate through the concentrate after the triple cleaning.
Roughly select and adopt sulfuric acid to be the adjustment agent; To transfer to the pH value be 2.5～3.0 to ore pulp when roughly selecting and scanning; Be re-dubbed flotation collector by weight at 2: 3 by petroleum sodium sulfonate and enuatrol, addition is respectively 600～700 gram/tons when roughly selecting, 300～400 gram/tons when scanning; The triple cleaning operation only needs the pH value is transferred to 2.5～3.0, no longer adds flotation collecting medicament.
The 6th step acidleach: iron tramp is fallen in thickness two parts kyanite concentrate merging carrying out acidleach handle, receive final kyanite concentrate.
Sulfuric acid is adopted in acidleach: hydrochloric acid is re-dubbed pickling agent by weight at 2: 1, in the acidleach pond, soaks after about 2 hours, adopts flushing with clean water 2～3 times, and spent acid and flushing water can be recycled after treatment.
The main chemical compositions of the kyanite of described entering ore-dressing practice is: Al
2O
3Be 12～21wt%, Fe
2O
3Be 6～8wt%, SiO
2Be 50～53wt%, Na
2O is 1～2wt%, and K2O is 3～4wt%, and CaO is 0.5～1wt%, and MgO is 3～4wt%.
Because adopt technique scheme, it is reasonable that the present invention has technological process section, execute-in-place is easy; Adjustment agent and two kinds of medicaments of collecting agent are only adopted in flotation, and regime of agent is very simple, and sulfuric acid, petroleum sodium sulfonate and enuatrol all are more cheap than the industrial products tool that is easier to obtain simultaneously.Adopt table concentration to obtain coarse granule kyanite concentrate, the one, meet and can receive the policy of early receiving, the 2nd, reduced the subsequent job load; One slightly sweeps the better recovery that three smart floatation process have been realized the fine grained kyanite, falls the final kyanite concentrate of iron tramp processing acquisition through thickness two parts concentrate being carried out acidleach.The grade of the alundum (Al of gained kyanite concentrate is more than the 58wt%; The impurity di-iron trioxide is less than 0.8wt%; The kyanite rate of recovery is more than 70%, reaches country-level article kyanite concentrate standard, can be used as the raw material of high grade refractory or other industrial product.
Therefore craft science of the present invention is reasonable, easily high the and rate of recovery height of operation and kyanite purity.
The specific embodiment:
Below in conjunction with the specific embodiment the present invention being further described, is not the restriction to its protection domain:
The kyanite ore of this described entering ore-dressing practice of mode of specifically having a try is that its main chemical compositions is: Al with the ore after the kyanite raw ore process break process
2O
3Be 18～21wt%, Fe
2O
3Be 6～8wt%, SiO
2Be 50～53wt%, Na
2O is 1～2wt%, K
2O is 3～4wt%, and CaO is 0.5～1wt%, and MgO is 3～4wt%.
Embodiment 1
A kind of beneficiation method for preparing the high-purity blue spar ore, the beneficiation method of present embodiment comprises the steps:
First step ore grinding: granularity is sent into ore mill less than the kyanite ore of 20mm～30mm, and blue spar ore ore grinding to ore fineness is for to account for more than the 80wt% less than 0.074 millimeter;
The second step desliming: the ore pulp behind the ore grinding is sloughed the sludge less than 0.020 millimeter through the desliming bucket;
The 3rd step magnetic separation: the ore pulp after the desliming is removed ferrous contaminants through two road high intensity magnetic separation process;
The 4th step table concentration: the kyanite ore pulp that high intensity magnetic separation is crossed adopts table concentration to obtain coarse granule kyanite concentrate
The 5th step flotation: the floatation process that the table concentration mine tailing employing one of having selected coarse granule kyanite concentrate is slightly swept three essences; Mine tailing after promptly roughly selecting carries out once purging selection; Mine tailing after scanning drains into the mine tailing storehouse as true tailings; Concentrate after scanning with roughly select concentrate and merge and to carry out selectedly, cleaner tailings returns and roughly selects operation for the first time for the first time, cleaner tailings returns selected operation for the first time for the second time; Cleaner tailings returns selected operation for the second time for the third time, becomes fine grained kyanite concentrate through the concentrate after the triple cleaning.
Roughly select and adopt sulfuric acid to be the adjustment agent; To transfer to the pH value be 2.5～3.0 to ore pulp when roughly selecting and scanning; Be re-dubbed flotation collector by weight at 2: 3 by petroleum sodium sulfonate and enuatrol, 600～700 gram/tons when addition is roughly selected, 300～400 gram/tons when scanning; The triple cleaning operation only needs the pH value is transferred to 2.5～3.0, no longer adds flotation collecting medicament.
The 6th step acidleach: iron tramp is fallen in thickness two parts kyanite concentrate merging carrying out acidleach handle, receive final kyanite concentrate.
Sulfuric acid is adopted in acidleach: hydrochloric acid is re-dubbed pickling agent by weight at 2: 1, in the acidleach pond, soaks after about 2 hours, adopts flushing with clean water 2～3 times, and spent acid and flushing water can be recycled after treatment.The technical indicator of kyanite final concentrate is seen table 1;
Table 1 kyanite concentrate technical indicator
Claims (4)
1. beneficiation method for preparing blue spar ore is characterized in that this beneficiation method such as following step:
First step ore grinding: with kyanite be crushed to granularity-20mm～-30mm, then it is sent into ore mill, blue spar ore ore grinding to ore fineness is for to account for more than the 80wt% less than 0.074 millimeter;
The second step desliming: the ore pulp behind the ore grinding is sloughed the sludge less than 0.020 millimeter through the desliming bucket;
The 3rd step magnetic separation: the ore pulp after the desliming is removed ferrous contaminants through two road high intensity magnetic separation process;
The 4th step table concentration: the kyanite ore pulp that high intensity magnetic separation is crossed adopts table concentration to obtain coarse granule kyanite concentrate;
The 5th step flotation: the floatation process that the table concentration mine tailing employing one of having selected coarse granule kyanite concentrate is slightly swept three essences; Mine tailing after promptly roughly selecting carries out once purging selection; Mine tailing after scanning drains into the mine tailing storehouse as true tailings; Concentrate after scanning with roughly select concentrate and merge and to carry out selectedly, cleaner tailings returns and roughly selects operation for the first time for the first time, cleaner tailings returns selected operation for the first time for the second time; Cleaner tailings returns selected operation for the second time for the third time, becomes fine grained kyanite concentrate through the concentrate after the triple cleaning;
The 6th step acidleach: iron tramp is fallen in thickness two parts kyanite concentrate merging carrying out acidleach handle, receive final kyanite concentrate.
2. beneficiation method according to claim 1 is characterized in that the main chemical compositions of the kyanite of described entering ore-dressing practice is: Al
2O
3Be 12～21wt%, Fe
2O
3Be 4～8wt%, SiO
2Be 50～53wt%, Na
2O is 1～2wt%, and K2O is 3～4wt%, and CaO is 0.5～1wt%, and MgO is 3～4wt%.
3. beneficiation method according to claim 1; It is characterized in that said method for floating is roughly selected adopts sulfuric acid to be the adjustment agent, and to transfer to the pH value be 2.5～3.0 to ore pulp when roughly selecting and scanning, and is re-dubbed flotation collector by weight at 2: 3 by petroleum sodium sulfonate and enuatrol; 600～700 gram/tons when addition is roughly selected; 300～400 gram/tons when scanning, triple cleaning operation only need the pH value is transferred to 2.5～3.0, no longer add flotation collecting medicament.
4. beneficiation method according to claim 1; The pickling agent that it is characterized in that said acidleach method is by sulfuric acid and hydrochloric acid is composite forms; Composite ratio is 2: 1 by weight; Kyanite soaks about 2 hours in the acidleach pond after, adopt flushing with clean water 2～3 times, spent acid and flushing water can be recycled after treatment.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104624360A (en) * | 2014-12-24 | 2015-05-20 | 中国地质科学院郑州矿产综合利用研究所 | Combined reagent and method for sorting kyanite minerals under neutral condition |
| RU2561641C1 (en) * | 2014-04-25 | 2015-08-27 | Федеральное государственное бюджетное учреждение науки Горный институт Кольского научного центра Российской академии наук | Floatation method of kyanitic ores with pre-extraction of sulphides and graphite |
| CN105013595A (en) * | 2015-08-07 | 2015-11-04 | 华北理工大学 | Beneficiation method for producing high-purity kyanite through low-grade kyanite |
| CN106583027A (en) * | 2016-12-13 | 2017-04-26 | 昆明理工大学 | Carbonate type high-silicon bauxite beneficiation method |
| CN108212503A (en) * | 2018-02-10 | 2018-06-29 | 广西华洋矿源材料有限公司 | A kind of purification choosing method of barite |
| CN109111101A (en) * | 2018-11-01 | 2019-01-01 | 中钢集团马鞍山矿山研究院有限公司 | A kind of purification by mineral method of glass sand |
| CN114570531A (en) * | 2022-01-25 | 2022-06-03 | 贵州省新材料研究开发基地 | Flotation separation method for low-grade carbonate fluorite ore |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2561641C1 (en) * | 2014-04-25 | 2015-08-27 | Федеральное государственное бюджетное учреждение науки Горный институт Кольского научного центра Российской академии наук | Floatation method of kyanitic ores with pre-extraction of sulphides and graphite |
| CN104624360A (en) * | 2014-12-24 | 2015-05-20 | 中国地质科学院郑州矿产综合利用研究所 | Combined reagent and method for sorting kyanite minerals under neutral condition |
| CN104624360B (en) * | 2014-12-24 | 2017-06-16 | 中国地质科学院郑州矿产综合利用研究所 | Combined reagent and method for sorting kyanite minerals under neutral condition |
| CN105013595A (en) * | 2015-08-07 | 2015-11-04 | 华北理工大学 | Beneficiation method for producing high-purity kyanite through low-grade kyanite |
| CN105013595B (en) * | 2015-08-07 | 2017-05-24 | 华北理工大学 | Beneficiation method for producing high-purity kyanite through low-grade kyanite |
| CN106583027A (en) * | 2016-12-13 | 2017-04-26 | 昆明理工大学 | Carbonate type high-silicon bauxite beneficiation method |
| CN106583027B (en) * | 2016-12-13 | 2019-06-11 | 昆明理工大学 | A kind of beneficiation method of carbonate-type high-silica diaspore ore |
| CN108212503A (en) * | 2018-02-10 | 2018-06-29 | 广西华洋矿源材料有限公司 | A kind of purification choosing method of barite |
| CN108212503B (en) * | 2018-02-10 | 2020-05-05 | 广西华洋矿源材料有限公司 | Purification and selection method of barite |
| CN109111101A (en) * | 2018-11-01 | 2019-01-01 | 中钢集团马鞍山矿山研究院有限公司 | A kind of purification by mineral method of glass sand |
| CN114570531A (en) * | 2022-01-25 | 2022-06-03 | 贵州省新材料研究开发基地 | Flotation separation method for low-grade carbonate fluorite ore |
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Application publication date: 20121024 |