CN104549762A - Grinding-flotation closed circuit technology for refractory high-magnesium collophanite - Google Patents
Grinding-flotation closed circuit technology for refractory high-magnesium collophanite Download PDFInfo
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Abstract
The invention discloses a grinding-flotation closed circuit technology for refractory high-magnesium collophanite. The grinding-flotation closed circuit technology comprises the flow that out ore grinding is firstly carried out on the refractory high-magnesium collophanite, then, reverse flotation roughing is carried out on an ore grinding product, a roughing foam product is used as final tailings, products in a tank are subjected to roughing to carry out reverse flotation selection, a selection foam product is used as an intermediate product which is returned back to a grinding machine to be mixed with raw ore which is not sorted, then, the mixture enters the grinding machine to be grinded, an ore grinding product enters a reverse flotation roughing working procedure again, and the products in the tank are used as final ore concentrate. When the technology is adopted to process the refractory high-magnesium collophanite, the P2O5 grade of the tailings can be lowered and an ore concentrate recovery rate is improved while a qualified ore concentrate product is obtained. According to the technology, the yield of the ore concentrate can be improved by 1-2%. The technology has a simple flow, on the premise that ore dressing cost is not improved, ore grinding fineness can be lowered, sorting efficiency and the quality of the ore concentrate product can be improved, meanwhile, the P2O5 grade of the tailings can be better lowered, the technical-economic indicator of the reverse flotation technology is improved, a resource use ratio is improved, and the grinding-flotation closed circuit technology has certain popularization value.
Description
Technical field
The present invention relates to a kind of minerals commonly used in chemical industry manufacture field, be related specifically to the de-magging floatation process that difficulty selects high magnesium collophane, is realize difficulty to select high magnesium collophane to obtain one of technological process of qualified concentrate containing product by flotation.
Background technology
At present high magnesium collophane is selected for difficulty, what great majority adopted is the technological process of single reverse flotation de-magging, the mineral processing circuit of the thick essence of general employing one, selected froth pulp returns to roughly select and selects, but because this kind of ore disseminated grain size is thinner, mog reaches-0.074mm when accounting for 90%, and the MgO grade of final concentrate is still difficult to reach≤0.8% requirement, generally all more than 1%.Find that its main cause is that the monomer dissociation of selected froth pulp is poor after deliberation, return that to roughly select de-magging effect when selecting again bad, finally cause the MgO index of concentrate product to be difficult to reach requirement.By carrying out float test to selected froth pulp separately, find to dissociate poor due to monomer whose, and coarse granule has part enrichment, sort the content of MgO of rear concentrate generally more than 2.5%, so cause the MgO grade of final concentrate product to be difficult to reach≤the requirement of 0.8%.Therefore this technique consider using selected foam as intermediate products with mix without the raw ore sorted after enter grinding machine and regrind, can more effective raising ore liberation degree of minerals, thus raising sorting index, acquisition qualified concentrate containing product.
For certain phosphate rock floating factory of Dianchi Lake, Yunnan Province periphery, the ore of these factory and office reason is substantially difficult selects high magnesium collophane, the P of mill head
2o
5grade is 19%-21%, and tcrude ore MgO% content is 5%-7.5%, and due to ore embedding portion fine size, mog requires that the high de-magging difficulty that causes is large, is difficult to the qualified concentrate containing product obtaining MgO grade≤0.8%, and mine tailing P
2o
5grade is substantially between 8%-9%.This phosphate rock floating factory adopts a thick smart reverse flotation de-magging flotation process, mog controls at-0.074mm content about 90%, selected froth pulp returns to roughly select and selects, but the mog due to selected froth pulp cannot reach the requirement of monomer dissociation, dissociate not exclusively, cannot effectively sort, finally enter into concentrate product, although the productive rate of selected froth pulp only accounts for about 10% of raw ore, but because MgO is wherein difficult to remove, finally cause MgO grade in concentrate higher, substantially cannot reach the requirement of content of MgO≤0.8%.So for whole flow process, to the process of selected froth pulp, be vital.
Summary of the invention
The object of the invention is in order to for the specific high magnesium collophane of Dianchi Lake, Yunnan Province periphery, de-magging poor effect, the unmanageable defect of tailings grade, provides a kind of technological process being more suitable for this type of difficulty and selecting high magnesium collophane ore to produce.
A kind of difficulty of the present invention selects high magnesium collophane to grind floating closed circuit technique, is realized by following scheme:
1. a difficulty selects high magnesium collophane to grind floating closed circuit technique, be characterised in that: difficulty selected high magnesium collophane to carry out ore grinding, first carry out anti-floating to ore milling product afterwards to roughly select, roughly select froth pulp as true tailings, in initial separatory cell, product carries out anti-floating selected, and selected froth pulp returns grinding machine as intermediate products and mixes without the raw ore sorted and enters grinding machine and carry out ore grinding, and ore milling product enters again anti-floatingly roughly selects operation, in cleaner cell, product is as final concentrate, and concrete steps are:
A. the difficulty for Dianchi Lake, Yunnan Province periphery selects high magnesium collophane, adopts ball mill or rod mill grinding attachment to carry out ore grinding;
B. carry out anti-lift-off magnesium to ore milling product to roughly select, roughly select froth pulp as true tailings, in groove, to carry out anti-lift-off magnesium selected for the selected operation of product introduction;
C. selected froth pulp returns grinding machine as intermediate products and is mixed into grinding machine ore grinding without the raw ore sorted, and ore milling product enters anti-lift-off magnesium and roughly selects operation, and in cleaner cell, product is as final concentrate.
2. the floating closed circuit technique of one according to claim 1 high magnesium collophane mill, it is characterized in that, the difficulty of the Dianchi Lake, Yunnan Province periphery described in step a selects high magnesium collophane, refers to that Dianchi Lake, Yunnan Province periphery is opencast with dolomite, molecular formula: MgCO
3caCO
3, be the collophane of major impurity, be specially: P
2o
5content is 17% ~ 23%, content of MgO is 5.5%-8%, the type ore major part mog can dissociate when reaching-0.074mm content 85%-88% but the mog of small part needs to reach-0.074mm content reaches more than 95% and just can reach better monomer dissociation, thus obtains the qualified concentrate containing of content of MgO≤0.8%.
3. a kind of difficulty according to claim 1 selects high magnesium collophane to grind floating closed circuit technique, it is characterized in that, the grinding attachments such as the employing ball mill described in step a or rod mill carry out ore grinding, refer to and adopt the grinding attachment such as ball mill or rod mill to obtain the ore milling product of-0.074mm content 85%-88% in raw ore.
4. a kind of difficulty according to claim 1 selects high magnesium collophane to grind floating closed circuit technique, it is characterized in that, anti-lift-off magnesium described in step b is roughly selected, refer to and ore milling product is stirred, add a certain amount of sulfuric acid and phosphoric acid and fatty-acid collector, then enter flotation cell and carry out anti-floatingly to roughly select, anti-floating roughly selecting obtains product and froth pulp two kinds of products in groove simultaneously, the anti-floating selected operation of product introduction in groove, froth pulp is as true tailings.
5. a kind of difficulty according to claim 1 selects high magnesium collophane to grind floating closed circuit technique, it is characterized in that, selected froth pulp described in step c returns grinding machine as intermediate products and to mix with without the raw ore sorted and regrind, refer to that the froth pulp that selected operation obtains is mixed by the charging gear of Cemented filling to grinding system and the raw ore without ore grinding, enter grinding system after mixing, obtain fineness by ore grinding and reach the ore milling product that-0.074mm accounts for 85%-88%.
First the present invention obtains the sample ore that this type of difficulty selects high magnesium collophane ore, has carried out process mineralogy research.Then according to one roughing primary cleaning, selected froth pulp returns the technological process of roughly selecting and selecting, carries out closed-circuit test, analyzes accordingly result of the test.Then determine to adopt the floating closed circuit flow process of mill according to process mineralogy research conclusion and analysis of experiments result, selected foam is regrinded as entering grinding machine after intermediate products mix with without the raw ore sorted, carry out closed-circuit test, obtain result of the test, and result of the test is analyzed, obtain final conclusion.
The present invention realizes difficulty to select one of the normal production and processing of high magnesium collophane and the technological process obtaining qualified concentrate containing product.The present invention be directed to the floating closed circuit new technology of one mill that Yunnan difficulty selects high magnesium collophane, the present invention has following outstanding advance: propose first to adopt ore grinding and flotation mill integrally to float closed circuit technological process in the technological process of collophane reverse flotation de-magging, change the technological process that original only floatation system is closed circuit, the part ore making disseminated grain size thinner is obtained by ore grinding again and fully dissociates, thus can obtain preferably mineral processing index.The present invention can obtain the preferably technical-economic index that this kind of difficulty selects high magnesium collophane, enable this kind of ore as the raw material producing qualified phosphorus concentrate product, when solving this kind of ore of former PROCESS FOR TREATMENT, be difficult to reach qualified concentrate index and the higher production difficult problem of tailings grade.The difficulty that this technique is particularly useful for Yunnan periphery selects high magnesium collophane, realization utilizes the enterprise of this type of ore in process of production, normal, stablely can obtain qualified concentrate containing product, such phosphate rock resource is fully used, have certain commercial introduction to be worth, the mill that the present invention simultaneously adopts floats closed circuit theory can as the reference of other mineral ore-dressing techniques.
Accompanying drawing explanation
Fig. 1 is the process chart of the embodiment of the present invention 1.
Fig. 2 is the process chart that the embodiment of the present invention 1 grinds that floating closed circuit process category-A difficulty selects high magnesium collophane ore.
Fig. 3 is the process chart that the embodiment of the present invention 2 former PROCESS FOR TREATMENT category-B difficulty selects high magnesium collophane ore.
Fig. 4 is the process chart that the embodiment of the present invention 2 grinds that floating closed circuit PROCESS FOR TREATMENT category-B difficulty selects high magnesium collophane ore.
Fig. 5 is the invention process process chart.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further analyzed, but does not limit and embodiment.
Difficulty of the present invention selects high magnesium collophane to grind floating closed circuit technique, be characterised in that its technological process is: difficulty selected high magnesium collophane to carry out ore grinding, first carry out anti-floating to ore milling product afterwards to roughly select, roughly select froth pulp as true tailings, in initial separatory cell, product carries out anti-floating selected, selected froth pulp returns grinding machine as intermediate products and mixes without the raw ore sorted and enters grinding machine and carry out ore grinding, and ore milling product enters again anti-floatingly roughly selects operation, and in cleaner cell, product is as final concentrate.Its concrete steps are:
A. the difficulty for Dianchi Lake, Yunnan Province periphery selects high magnesium collophane, adopts the grinding attachment such as ball mill or rod mill to carry out ore grinding.
B. carry out anti-lift-off magnesium to ore milling product to roughly select, roughly select froth pulp as true tailings, in groove, to carry out anti-lift-off magnesium selected for the selected operation of product introduction.
C. selected froth pulp returns grinding machine as intermediate products and is mixed into grinding machine ore grinding without the raw ore sorted, and ore milling product enters anti-lift-off magnesium and roughly selects operation, and in cleaner cell, product is as final concentrate.
The difficulty of the Dianchi Lake, Yunnan Province periphery described in step a selects high magnesium collophane, refers to that Dianchi Lake, Yunnan Province periphery is opencast with dolomite (molecular formula: MgCO
3caCO
3) be the collophane of major impurity, be specially: P
2o
5content is 17% ~ 23%, content of MgO is 5.5%-8%, the type ore major part mog can dissociate when reaching-0.074mm content 85%-88% but the mog of small part needs to reach-0.074mm content reaches more than 95% and just can reach better monomer dissociation, thus obtains the qualified concentrate containing of content of MgO≤0.8%.
The grinding attachments such as the employing ball mill described in step a or rod mill carry out ore grinding, refer to and adopt the grinding attachment such as ball mill or rod mill to obtain the ore milling product of-0.074mm content 85%-88% in raw ore.
Anti-lift-off magnesium described in step b is roughly selected, refer to and ore milling product is stirred, add a certain amount of sulfuric acid and phosphoric acid and fatty-acid collector simultaneously, then enter flotation cell and carry out anti-floating roughly selecting, anti-floating roughly selecting obtains product and froth pulp two kinds of products in groove, the anti-floating selected operation of product introduction in groove, froth pulp is as true tailings.
Selected froth pulp described in step c returns grinding machine as intermediate products and to mix with without the raw ore sorted and regrind, refer to that the froth pulp that selected operation obtains is mixed by the charging gear of Cemented filling to grinding system and the raw ore without ore grinding, enter grinding system after mixing, obtain fineness by ore grinding and reach the ore milling product that-0.074mm accounts for 85%-88%.
embodiment 1.
Ore type is difficult selects high magnesium collophane, is numbered A, and carried out chemical multinomial analysis after sample ore prepares, analysis result is shown in Table 1:
table 1: the multinomial analysis result of raw ore chemistry
former PROCESS FOR TREATMENT category-A difficulty selects high magnesium collophane ore
Technological process is as Fig. 1, and adopt a thick cleaner flotation flow process, first difficulty selected high magnesium collophane to carry out ore grinding, mog accounts for 87.05% for-0.074mm content.First carry out anti-floating to ore milling product afterwards to roughly select, roughly select froth pulp as true tailings, then in initial separatory cell, product carries out anti-floating selected, and selected froth pulp returns as intermediate products and roughly selects flow process, and in cleaner cell, product is final concentrate.
Result of the test is as table 2.
Table 2:
former PROCESS FOR TREATMENT category-A difficulty selects high magnesium collophane oreresult of the test
As seen from Table 2, flotation category-A ore, mill head P
2o
5grade 21.00%, MgO% content 5.80%, through a thick essence, selected froth pulp returns roughly selects technique, obtains concentrate product P
2o
5grade 28.75%, content of MgO 1.04%, productive rate 60.50%, mine tailing P
2o
5grade 6.86%, the rate of recovery reaches 82.55%.Although substantially reach concentrate product index, content of MgO is more than 1%, and concentrate quality can not reach requirement.
the floating closed circuit process category-A difficulty of mill selects high magnesium collophane ore
Technological process, as Fig. 2, adopts a thick cleaner flotation flow process, first difficulty is selected high magnesium collophane to carry out ore grinding, be milled to-0.074mm content and account for 86.33%.First carry out anti-floating to ore milling product afterwards to roughly select, roughly select froth pulp as true tailings, in initial separatory cell, product carries out anti-floating selected, selected froth pulp returns grinding machine as intermediate products and mixes without the raw ore sorted and enters grinding machine and carry out ore grinding, ore milling product again enters anti-floating and roughly selects operation, form circulation closed circuit, in cleaner cell, product is as final concentrate.
Result of the test is as table 3.
table 3: the floating closed circuit process category-A difficulty of mill selects the result of the test of high magnesium collophane ore
As seen from Table 3, flotation category-A ore, mill head P
2o
5grade 21.00%, MgO% content 5.80, through a thick essence, selected froth pulp returns to follow and enters grinding machine ore grinding without after the raw ore mixing sorted, and forms the floating closed cycle system of mill, finally obtains concentrate product P
2o
5grade 29.00%, content of MgO 0.68%, productive rate 61.00%, mine tailing P
2o
5grade 5.43%, the rate of recovery reaches 85.38%, and concentrate product touches the mark, and content of MgO controls below 0.8%.
Can find out according to table 2, table 3 Comparative result, for category-A ore, after adopting the floating closed circuit PROCESS FOR TREATMENT of mill, sorting index significantly improves, and selected froth pulp, can better monomer dissociation after regrinding process, compares, concentrate P with former treatment process
2o
5grade improves 0.25%, and concentrate content of MgO reduces by 0.38%, mine tailing P
2o
5grade reduces by 1.43%, the P of final concentrate
2o
5the rate of recovery improves 2.83%.
embodiment 2
Ore type is difficult selects high magnesium collophane, is numbered B, and carried out chemical multinomial analysis after sample ore prepares, analysis result is shown in Table 4:
the multinomial analysis result of table 4. raw ore chemistry
former PROCESS FOR TREATMENT category-B difficulty selects high magnesium collophane ore
Technological process is as Fig. 3, and adopt a thick cleaner flotation flow process, first difficulty selected high magnesium collophane to carry out ore grinding, mog accounts for 87.24% for-0.074mm content.First carry out anti-floating to ore milling product afterwards to roughly select, roughly select froth pulp as true tailings, then in initial separatory cell, product carries out anti-floating selected, and selected froth pulp returns as intermediate products and roughly selects flow process, and in cleaner cell, product is final concentrate.Raw ore used is that category-B difficulty selects high magnesium collophane, due to raw ore P
2o
5content reduces, and content of MgO improves, so need to extend flotation time, increases sulfuric acid dosage.
Result of the test is as table 5.
Table 5
As seen from Table 5, flotation category-B ore, mill head P
2o
5grade 18.71%, content of MgO 7.60%, through a thick essence, selected froth pulp returns roughly selects technique, obtains concentrate product P
2o
5grade 28.71%, content of MgO 1.30%, productive rate 51.97%, mine tailing P
2o
5grade 7.03, the rate of recovery 79.75%, although substantially reach concentrate product index, content of MgO is more than 1%, and the rate of recovery reduces, and illustrates as ore P
2o
5when grade is too low, flotation process is still had a significant impact, be difficult to obtain qualified concentrate product.
the floating closed circuit PROCESS FOR TREATMENT category-B difficulty of mill selects high magnesium collophane ore
Experiment process, as Fig. 4, adopts a thick cleaner flotation flow process, first difficulty is selected high magnesium collophane to carry out ore grinding, be milled to-0.074mm content and account for 86.57%.First carry out anti-floating to ore milling product afterwards to roughly select, roughly select froth pulp as true tailings, in initial separatory cell, product carries out anti-floating selected, selected froth pulp returns grinding machine as intermediate products and mixes without the raw ore sorted and enters grinding machine and carry out ore grinding, ore milling product again enters anti-floating and roughly selects operation, form circulation closed circuit, in cleaner cell, product is as final concentrate.Raw ore used is that high magnesium collophane A two kinds of different difficulties select high magnesium collophane, so in the scheme of design flotation flowsheet, main purpose is de-magging.
Result of the test is as table 6.
table 6: the floating closed circuit PROCESS FOR TREATMENT category-B difficulty of mill selects high magnesium collophane ore result of the test
As seen from Table 6, flotation category-B ore, mill head P
2o
5grade 18.71%, content of MgO 7.60%, through a thick essence, selected froth pulp returns to follow and enters grinding machine ore grinding without after the raw ore mixing sorted, and forms the circulating system that mill is floating closed circuit, finally obtains concentrate product P
2o
5grade 29.49%, content of MgO 0.73%, productive rate 51.57%, mine tailing P
2o
5grade 5.04%, the rate of recovery reaches 81.28%, and concentrate product touches the mark, and content of MgO controls below 0.8%.
Consolidated statement 5, table 6 Comparative result can be found out, for category-B ore, after adopting the floating closed circuit PROCESS FOR TREATMENT of mill, sorting index significantly improves, and selected foam, can better monomer dissociation after regrinding process, compares, concentrate P with former treatment process
2o
5grade improves 0.78%, and concentrate content of MgO reduces by 0.57%, mine tailing P
2o
5grade reduces by 1.99%, and ult rec improves 1.53%.
Embodiments of the invention can be understood as without departing from the principles of the present invention, high magnesium collophane is selected in use different regions, variety classes difficulty, can carry out multiple difference change to these embodiments and replace, scope of the present invention be limited by claim and coordinate.
Claims (5)
1. a difficulty selects high magnesium collophane to grind floating closed circuit technique, be characterised in that: difficulty selected high magnesium collophane to carry out ore grinding, first carry out anti-floating to ore milling product afterwards to roughly select, roughly select froth pulp as true tailings, in initial separatory cell, product carries out anti-floating selected, and selected froth pulp returns grinding machine as intermediate products and mixes without the raw ore sorted and enters grinding machine and carry out ore grinding, and ore milling product enters again anti-floatingly roughly selects operation, in cleaner cell, product is as final concentrate, and concrete steps are:
Difficulty for Dianchi Lake, Yunnan Province periphery selects high magnesium collophane, adopts ball mill or rod mill grinding attachment to carry out ore grinding;
Carry out anti-lift-off magnesium to ore milling product to roughly select, roughly select froth pulp as true tailings, in groove, to carry out anti-lift-off magnesium selected for the selected operation of product introduction;
C. selected froth pulp returns grinding machine as intermediate products and is mixed into grinding machine ore grinding without the raw ore sorted, and ore milling product enters anti-lift-off magnesium and roughly selects operation, and in cleaner cell, product is as final concentrate.
2. the floating closed circuit technique of one according to claim 1 high magnesium collophane mill, it is characterized in that, the difficulty of the Dianchi Lake, Yunnan Province periphery described in step a selects high magnesium collophane, refers to that Dianchi Lake, Yunnan Province periphery is opencast with dolomite, molecular formula: MgCO
3caCO
3, be the collophane of major impurity, be specially: P
2o
5content is 17% ~ 23%, content of MgO is 5.5%-8%, the type ore major part mog can dissociate when reaching-0.074mm content 85%-88% but the mog of small part needs to reach-0.074mm content reaches more than 95% and just can reach better monomer dissociation, thus obtains the qualified concentrate containing of content of MgO≤0.8%.
3. a kind of difficulty according to claim 1 selects high magnesium collophane to grind floating closed circuit technique, it is characterized in that, the grinding attachments such as the employing ball mill described in step a or rod mill carry out ore grinding, refer to and adopt the grinding attachment such as ball mill or rod mill to obtain the ore milling product of-0.074mm content 85%-88% in raw ore.
4. a kind of difficulty according to claim 1 selects high magnesium collophane to grind floating closed circuit technique, it is characterized in that, anti-lift-off magnesium described in step b is roughly selected, refer to and ore milling product is stirred, add a certain amount of sulfuric acid and phosphoric acid and fatty-acid collector, then enter flotation cell and carry out anti-floatingly to roughly select, anti-floating roughly selecting obtains product and froth pulp two kinds of products in groove simultaneously, the anti-floating selected operation of product introduction in groove, froth pulp is as true tailings.
5. a kind of difficulty according to claim 1 selects high magnesium collophane to grind floating closed circuit technique, it is characterized in that, selected froth pulp described in step c returns grinding machine as intermediate products and to mix with without the raw ore sorted and regrind, refer to that the froth pulp that selected operation obtains is mixed by the charging gear of Cemented filling to grinding system and the raw ore without ore grinding, enter grinding system after mixing, obtain fineness by ore grinding and reach the ore milling product that-0.074mm accounts for 85%-88%.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104801418A (en) * | 2015-05-11 | 2015-07-29 | 中蓝连海设计研究院 | Coarse grain reverse floatation magnesium removal method for phosphorus ore |
| CN104826741A (en) * | 2015-05-08 | 2015-08-12 | 中蓝连海设计研究院 | Flotation and backwater method aiming at collophanite double-back flotation process |
| CN105233966A (en) * | 2015-10-08 | 2016-01-13 | 云南磷化集团有限公司 | Chemical magnesium removal and phosphorite reverse flotation coupling technology |
| CN105597913A (en) * | 2016-02-18 | 2016-05-25 | 云南磷化集团有限公司 | Method for realizing flotation of concentrates by use of ores |
| CN106423536A (en) * | 2016-12-21 | 2017-02-22 | 中蓝连海设计研究院 | Substep ore grinding reverse-reverse direct flotation process for treating silico-calcium collophanite |
| CN107890955A (en) * | 2017-11-06 | 2018-04-10 | 云南磷化集团有限公司 | A kind of and supporting short route method for floating of chemical plant installations |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104826741A (en) * | 2015-05-08 | 2015-08-12 | 中蓝连海设计研究院 | Flotation and backwater method aiming at collophanite double-back flotation process |
| CN104801418A (en) * | 2015-05-11 | 2015-07-29 | 中蓝连海设计研究院 | Coarse grain reverse floatation magnesium removal method for phosphorus ore |
| CN104801418B (en) * | 2015-05-11 | 2017-11-14 | 中蓝连海设计研究院 | A kind of coarse grain reverse flotation de-magging method for phosphorus ore |
| CN105233966A (en) * | 2015-10-08 | 2016-01-13 | 云南磷化集团有限公司 | Chemical magnesium removal and phosphorite reverse flotation coupling technology |
| CN105597913A (en) * | 2016-02-18 | 2016-05-25 | 云南磷化集团有限公司 | Method for realizing flotation of concentrates by use of ores |
| CN106423536A (en) * | 2016-12-21 | 2017-02-22 | 中蓝连海设计研究院 | Substep ore grinding reverse-reverse direct flotation process for treating silico-calcium collophanite |
| CN107890955A (en) * | 2017-11-06 | 2018-04-10 | 云南磷化集团有限公司 | A kind of and supporting short route method for floating of chemical plant installations |
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