CN104437830A - Process for removing impurities and improving whiteness of calcite ore - Google Patents
Process for removing impurities and improving whiteness of calcite ore Download PDFInfo
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- CN104437830A CN104437830A CN201410611811.5A CN201410611811A CN104437830A CN 104437830 A CN104437830 A CN 104437830A CN 201410611811 A CN201410611811 A CN 201410611811A CN 104437830 A CN104437830 A CN 104437830A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
Abstract
The invention relates to a process for removing impurities and improving whiteness of calcite ores, which removes impurities by a grading color separation process by adopting a photoelectric color separator. The method fully utilizes the characteristic that the calcite natural minerals have different optical properties, adopts the photoelectric sorting machine to sort, has the characteristics of simple process, high work efficiency, low cost, suitability for large-scale production and the like, and is widely suitable for purifying calcite ores with dyeing impurities; and the concentrate products with different qualities can be obtained according to different sorting precision and effect of samples with different size fractions.
Description
Technical field
The present invention relates to the Appropriate application of calcite ore, particularly relate to the technique that a kind of calcite ore removal of impurities improves whiteness.
Background technology
Calcite is a kind of calcium carbonate mineral, also known as coarse whiting, it is a kind of important inorganic salt product, due to its have that chemical purity is high, inertia greatly, not easily chemical reaction, Heat stability is good, can not decompose below 400 DEG C, whiteness is high, oil absorbency is low, index of refraction is low, matter is soft, containing advantages such as the crystallization water, the low wearing valve of hardness are little, and be widely used in the aspects such as plastics, rubber, papermaking, ink, building materials, medicine.
The color of calcite mostly generally is white or colourless, because wherein having impact in various degree containing the Staining Impurities on Whiteness of Calcite such as iron, titanium, manganese, sulphur, arsenic, organic matter, can present pale yellow, pale red, brown black etc., directly restrict its range of application and using value.Wherein brown-black calcite is comparatively common a kind of ore type, and the height of its content is one of key factor affecting product whiteness.The method of such calcite impurity of current removing is mainly manual pick and high intensity magnetic separation method.Manual pick is the current on-the-spot a kind of method generally adopted, but because its efficiency is low, the labour intensity of staff is not suitable for large-scale production and application greatly and gradually.High intensity magnetic separation method is comparatively practical method, mainly be applicable to the removal of the dyeing calcite impurity such as iron content, document " impact of fineness and Staining Impurities on Whiteness of Calcite " [Jiangsu geology, 26 (4), 214-215,2002] comparatively describe in detail with Zhenjiang, Jiangsu calcite ore as research object, by deep processing means such as Ultra-fine grinding, hydraulic classiciation, High gradient high intensity magnetic separations, product whiteness is increased to more than 90% by 86.14%, and have studied emphatically fineness and staining impurity to the impact of whiteness.But this technology exists following defect, this technology adopts Ultra-fine grinding, and not only energy consumption is high, and superfine granularity is unfavorable to follow-up high intensity magnetic separation, is difficult to realize in actual production.
Summary of the invention
Technical problem to be solved by this invention is the defect overcoming prior art, propose and utilize impure calcite i.e. surface different from the color of valuable rock different and a kind of calcite ore removal of impurities that is that separated by brown-black calcite improves the technique of whiteness to light reflectance, this technique comprises the following steps:
(1) first adopt the washing screen of certain size to carry out washing desliming in the calcite raw ore gathered from mine, under the sieve wherein obtained, shale thing abandons as mine tailing;
(2) on the sieve after washing, calcite sample adopts disintegrating machine to carry out fragmentation, makes its granularity be less than 10mm;
(3) the calcite sample after fragmentation adopts the sieve being of a size of 5mm and 2mm to carry out classification, is classified into the sample of-10+5mm ,-5+2mm ,-2mm three kinds of size fractionated;
(4) color selector is adopted to carry out sorting to the sample of three kinds of size fractionated respectively;
(5) be that-10+5mm ,-5+2mm two kinds of grade samples all adopt the technological process carrying out one roughing can obtain the concentrate of high-quality respectively for grade, and adjust suitable color selector running parameter simultaneously, obtain final concentrate and tailings product; For grade be-2mm sample adopt first carry out one roughing, the rough concentrate after roughly selecting is again through primary cleaning, and rougher tailings and selected mine tailing are all abandoned as true tailings; And adjust suitable color selector running parameter simultaneously, obtain final concentrate and tailings product;
(6)-10+5mm and-5+2mm two kinds of grades are due to coarse size, sort precision and effective, and these two kinds of grade concentrate merge and form high-quality concentrate 1;-2mm grade due to granularity comparatively thin, sort precision and effect is slightly poor, this kind of grade sorts the concentrate 2 that concentrate forms separately better quality; Whole mine tailing merges formation true tailings and abandons.
Preferably, the granularity that in step (1), under raw ore bulk granularity state, washup is thrown except product is 1-3mm.
Preferably, in step (3), the grading of raw ore becomes the selected sample of 2-10mm size fractionated.
Preferably, the sorting equipment adopted in step (4) is photoelectric colour sorter.
Preferably, in step (5), size fractionated sample adopts different process structures, size fractionated sample adjusts different photoelectric colour sorter running parameters, and the mine-supplying quantity wherein for the grade sample photoelectric colour sorter of-10+5mm is 7-9t/h, identifies that rate is 0.18-0.25mm respectively, system identification time 14-16ms, light source wavelength band are 380-780nm, executing agency's air pressure is 0.75-0.85MPa; Mine-supplying quantity wherein for the grade sample photoelectric colour sorter of-5+2mm is 1.8-3t/h, identifies that rate is 0.10-0.22mm respectively, system identification time 12-15ms, light source wavelength band are 380-780nm, executing agency's air pressure is 0.65-0.8MPa; Mine-supplying quantity wherein for-2mm grade sample photoelectric colour sorter is 0.45-0.55t/h, identifies that rate is 0.07-0.09mm respectively, system identification time 9-11ms, light source wavelength band are 380-780nm, executing agency's air pressure is 0.5-0.7MPa.
Preferably, the precision calcite concentrate product that obtain several different quality different from effect is sorted according to size fractionated in step (6).
Beneficial effect:
Compared with the existing technology, the present invention utilizes between qualified material and defective material, or the characteristic that the contrast of the color distortion between qualified material from other impurity to light sensation is different, the defective material adopting photoelectricity storting apparatus to remove and impurity sort out, finally reach sorting object.High intensity magnetic separation process is adopted to compare after the fine grinding reported with current artificial hand selection's technique and pertinent literature; this technology sorts that quality is high, work efficiency is high, cost is low; can solve at present on-the-spot adopt depend merely on manpower, defect that work efficiency is low, and this technology can be that calcite industry sizeization is produced, standardization production and processing, production scene automatic improving lay a good foundation.In addition, according to size fractionated to sort precision and effect different, the concentrate product of different grade can be obtained.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
Detailed description of the invention
The present invention is achieved by the following technical solutions:
First the calcite raw ore sample gathered from mine carries out the shale thing that washup removes sample ore surface, then adopt crusher in crushing to certain particle size, carry out classification to crushed product, the sample after classification adopts photoelectric colour sorter equipment, carry out roughly selecting with selected, it is characterized in that its step comprises successively:
(1) first washing screen is adopted to carry out washing desliming in the bulk calcite raw ore gathered from mine, namely raw ore removes the particulate dyeing shale things such as the iron content of the second-rate and surface adhesion that part has been dissociated adopt the flushing action of washing screen at water under large block particulate form under, and under raw ore bulk granularity state, the granularity except product is thrown in washup is 1-3mm.
(2) on the sieve after washing, sample adopts disintegrating machine to carry out fragmentation, makes granularity be less than 10mm, so that the impurity gangue mineral of dyeing and valuable mineral are dissociated into free state.
(3) the calcite sample after fragmentation adopts screen size to be that the sieve of 5mm, 2mm carries out classification respectively, is classified into the sample of-10+5mm ,-5+2mm ,-2mm three kinds of size fractionated, to eliminate the impact of granularity effect on sorting result.According to the actual conditions of ore, the calcite sample after fragmentation can also be divided into the sample of multiple size fractionated, the sample of-10+6mm ,-6+3mm ,-3+1mm ,-1+0.5mm ,-0.5mm five size fractionated can be classified into.
(4) according to this ore properties feature, select photoelectric colour sorter as the sorting equipment of the best; The operation principle of photoelectric colour sorter utilizes between qualified samples and failed test sample, or the different characteristic of the contrast of shade to light sensation between qualified samples from its impurity carries out work; Ore sample is first delivered to material vibrator by it, ore sample is entered by vibrator to be had in the chute of certain angle, by the optical camera being contained in material both sides in color selector, illumination contrast is carried out to ore sample, capture and the discrepant ore sample of qualified ore sample color and impurity, then the signal of telecommunication is converted to by optical signal, again through the amplification process of signal, order magnetic valve starts high pressure draught nozzle, to jet target with high pressure draught, thus the defective ore sample that will remove and impurity ejection, finally reach the object of look choosing.And be suitable for the optimal operation parameter of the photoelectric colour sorter that this grade sorts for the sample adjustment of size fractionated, like this by adjust the main running parameter of color selector as mine-supplying quantity flow, actuator pressure, identify rate, accuracy of identification etc. respectively, make color selector be in best duty all the time.
(5) after the optimum working parameter determining size fractionated sample, be that-10+5mm ,-5+2mm two grade samples all adopt the simple process flow once sorted respectively for grade, obtain final concentrate and tailings product.For the technological process that grade is-2mm sample employing one roughing, primary cleaning, obtain final concentrate and tailings product.Also according to the concrete quality of milling ore and concentrate quality situation can be required simultaneously, increase the hop count of selected operation.
(6) wherein-10+5mm ,-5+2mm two grade concentrate merge the concentrate 2 that high-quality the concentrate 1 ,-2mm grade of formation sorts concentrate formation better quality, and whole mine tailing merges formation true tailings.
embodiment 1
The calcite ore in Zhong Li Fine Chemical Co., Ltd of Nanzhao Henan mining area, essential mineral in ore has calcite, a small amount of clay mineral, and metalliferous mineral is mainly limonite, bloodstone, manganese ore etc., calcite color containing impurity such as ferrimanganics becomes pitchy, and the measured calcite of matter is white.Sorting process step is as follows:
(1) gather 200 kilograms, raw ore sample from mine, granularity is about 200 ~ 0mm, and the diagrid being of a size of 2mm rinses with water and carries out desliming, undersize productive rate is 8.09%, abandons as mine tailing;
(2) on the sieve after washing, sample adopts jaw crusher broken, and adopt the sieve screening of 10mm, on sieve, sample carries out in small, broken bits again, makes final crushed product size all be less than 10mm;
(3) the calcite sample after fragmentation adopts the sample that size is respectively 5mm, 2 mm sieves are classified into 3 kinds of size fractionated, after sample classification, grade is respectively :-10+5mm ,-5+2mm ,-2mm, and three grades are respectively 40.33%, 26.65%, 24.93% relative to the productive rate of raw ore.
(4) photoelectric colour sorter is then adopted to sort, that-10+5mm grade sample adopts the technological process first carrying out the selection of photoelectricity respectively to grade, the mine-supplying quantity adjusting photoelectric colour sorter in ore dressing process is 7.5t/h, identifies that rate is 0.2mm respectively, system identification time 15ms, light source wavelength band are 380-780nm, executing agency air pressure 0.8MPa, obtains final part concentrate product 1 and mine tailing sample.Also the technological process carrying out one roughing is adopted for-5+2mm grade sample, the mine-supplying quantity of adjustment photoelectric colour sorter is 2t/h, identifies that rate is 0.18mm respectively, system identification time 14ms, light source wavelength band are 380-780nm, executing agency air pressure 0.7MPa, obtains part concentrate 1 and mine tailing sample.For grade be-2mm sample adopt first through one roughing, rough concentrate after roughly selecting is again through primary cleaning, the mine-supplying quantity simultaneously adjusting photoelectric colour sorter is respectively 0.5t/h, identifies that rate is 0.08mm respectively, system identification time 10ms, light source wavelength band are 380-780nm, executing agency air pressure 0.6MPa, obtain final concentrate 2, rougher tailings and cleaner tailings as true tailings.
(5) concentrate 1 that productive rate is 62.33%, whiteness is 95 can finally be obtained; Productive rate 21.64%, whiteness are the concentrate 2 of 91.The whiteness of raw ore product is 85.
embodiment 2
The calcite ore of Central Plains, Nanzhao Henan mining industry Co., Ltd, sorting process step is as follows:
(1) gather 500 kilograms, raw ore sample from mine, granularity is about 500 ~ 0mm, and the sieve being of a size of 3mm rinses with water and carries out desliming, undersize productive rate 15.35%, abandons as mine tailing;
(2) on the sieve after washing, sample adopts jaw crusher broken, and adopt the sieve screening of 10mm, on sieve, sample carries out in small, broken bits again, makes final crushed product size all be less than 10mm;
(3) the calcite sample after fragmentation adopts the sample that size is respectively 5mm, 2 mm sieves are classified into 3 size fractionated, after sample classification, grade is respectively :-10+5mm ,-5+2mm ,-2mm, and three grades are respectively 42.05%, 20.25%, 22.35% relative to the productive rate of raw ore.
(4) photoelectric colour sorter is then adopted to sort, the technological process that-10+5mm grade sample adopts the selection of photoelectricity respectively to grade, the mine-supplying quantity adjusting photoelectric colour sorter in ore dressing process is 7 t/h, identifies that rate is 0.18mm respectively, system identification time 14ms, light source wavelength band are 380-780nm, executing agency air pressure 0.77MPa, obtains final part concentrate product 1 and mine tailing sample.Also the technological process of a photoelectricity selection is adopted for-5+2mm grade sample, the mine-supplying quantity of adjustment photoelectric colour sorter is 1.8t/h, identifies that rate is 0.15mm respectively, system identification time 12ms, light source wavelength band are 380-780nm, executing agency air pressure 0.65MPa, obtains part concentrate 1 and mine tailing sample.That-2mm sample adopts and first roughly selects through the selection of photoelectricity for grade, rough concentrate after roughly selecting is again through primary cleaning, the mine-supplying quantity simultaneously adjusting photoelectric colour sorter is respectively 0.45t/h, identifies that rate is 0.07mm respectively, system identification time 9ms, light source wavelength band are 380-780nm, executing agency air pressure 0.5MPa, obtains final concentrate 2 and mine tailing sample.
(5) concentrate 1 that productive rate is 59.87%, whiteness is 96 can finally be obtained; Productive rate 19.25%, whiteness are the concentrate 2 of 90.The whiteness of raw ore product is 86.
embodiment 3
Enterprise of Henan Fangcheng calcite raw ore, sorting process step is as follows:
(1) gather 500 kilograms, raw ore sample from mine, granularity is about below 200mm, and the sieve being of a size of 3mm rinses with water and carries out desliming, undersize productive rate 9.17%, undersize is abandoned as mine tailing.
(2) on the sieve after washing, sample adopts jaw crusher broken, and adopt the sieve screening of 10mm, on sieve, sample carries out in small, broken bits again, makes final crushed product size all be less than 10mm.
(3) the calcite sample after fragmentation adopts size to be respectively the sample that 5mm, 2mm sieve is classified into 3 size fractionated, after sample classification, grade is respectively :-10+5mm ,-5+2mm ,-2mm, and three grades are respectively 45.29%, 25.28%, 20.26% relative to the productive rate of raw ore.
(4) photoelectric colour sorter is then adopted to sort, to grade, to be-10+5mm grade sample respectively through a photoelectricity selection roughly select can obtain high-quality concentrate, the mine-supplying quantity adjusting photoelectric colour sorter in ore dressing process is 8.5t/h, identifies that rate is 0.22mm respectively, system identification time 16ms, light source wavelength band are 380-780nm, executing agency air pressure 0.82MPa, obtains part concentrate product 1 and mine tailing sample.Equally also carry out one roughing for-5+2mm grade sample and can obtain concentrate, the mine-supplying quantity of adjustment photoelectric colour sorter is 2.5t/h, identifies that rate is 0.22mm respectively, system identification time 15ms, light source wavelength band are 380-780nm, executing agency air pressure 0.78MPa, obtains part concentrate 1 and mine tailing sample.For grade be-2mm sample adopt first through one roughing, rough concentrate after roughly selecting is again through primary cleaning, the mine-supplying quantity simultaneously adjusting photoelectric colour sorter is respectively 0.55t/h, identifies that rate is 0.09mm respectively, system identification time 11ms, light source wavelength band are 380-780nm, executing agency air pressure 0.7MPa, obtains final concentrate 2 and mine tailing sample.
(4) concentrate 1 that productive rate is 65.87%, whiteness is 94 can finally be obtained; Productive rate 15.29%, whiteness are the concentrate 2 of 90, and the whiteness of raw ore product is 84.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. calcite ore removal of impurities improves a technique for whiteness, and it is characterized in that, this technique comprises the following steps:
(1) first adopt the washing screen of certain size to carry out washing desliming in the calcite raw ore gathered from mine, under the sieve wherein obtained, shale thing abandons as mine tailing;
(2) on the sieve after washing, calcite sample adopts disintegrating machine to carry out fragmentation, makes its granularity be less than 10mm;
(3) calcite sample after fragmentation adopts the sieve being of a size of 5mm and 2mm to carry out classification, be classified into-10+5mm,
The sample of-5+2mm ,-2mm three kinds of size fractionated;
(4) color selector is adopted to carry out sorting to the sample of three kinds of size fractionated respectively;
(5) be that-10+5mm ,-5+2mm two kinds of grade samples all adopt the technological process carrying out one roughing can obtain the concentrate of high-quality respectively for grade, and adjust suitable color selector running parameter simultaneously, obtain final concentrate and tailings product; For grade be-2mm sample adopt first carry out one roughing, the rough concentrate after roughly selecting is again through primary cleaning, and rougher tailings and selected mine tailing are all abandoned as true tailings; And adjust suitable color selector running parameter simultaneously, obtain final concentrate and tailings product;
(6)-10+5mm and-5+2mm two kinds of grades are due to coarse size, sort precision and effective, and these two kinds of grade concentrate merge and form high-quality concentrate 1;-2mm grade due to granularity comparatively thin, sort precision and effect is slightly poor, this kind of grade sorts the concentrate 2 that concentrate forms separately better quality; Whole mine tailing merges formation true tailings and abandons.
2. a kind of calcite ore removal of impurities according to claim 1 improves the technique of whiteness, it is characterized in that: adopt washup diagrid to carry out washup under raw ore bulk granularity state in step (1), throw except granularity be 1-3mm containing mud impure mineral.
3. a kind of calcite ore removal of impurities according to claim 1 improves the technique of whiteness, it is characterized in that: after broken in step (3), raw ore is classified into the selected sample of 2-10mm size fractionated.
4. a kind of calcite ore removal of impurities according to claim 1 improves the technique of whiteness, it is characterized in that: the storting apparatus adopted in step (4) is photoelectric colour sorter.
5. a kind of calcite ore removal of impurities according to claim 4 improves the technique of whiteness, it is characterized in that: in step (5), size fractionated sample adopts different process structures, size fractionated sample adjusts different photoelectric colour sorter running parameters, and the mine-supplying quantity wherein for the grade sample photoelectric colour sorter of-10+5mm is 7-9t/h, identifies that rate is 0.18-0.25mm respectively, system identification time 14-16ms, light source wavelength band are 380-780nm, executing agency's air pressure is 0.75-0.85MPa; Mine-supplying quantity wherein for the grade sample photoelectric colour sorter of-5+2mm is 1.8-3t/h, identifies that rate is 0.10-0.22mm respectively, system identification time 12-15ms, light source wavelength band are 380-780nm, executing agency's air pressure is 0.65-0.8MPa; Mine-supplying quantity wherein for-2mm grade sample photoelectric colour sorter is 0.45-0.55t/h, identifies that rate is 0.07-0.09mm respectively, system identification time 9-11ms, light source wavelength band are 380-780nm, executing agency's air pressure is 0.5-0.7MPa.
6. a kind of calcite ore removal of impurities according to claim 1 improves the technique of whiteness, it is characterized in that: sort the precision calcite concentrate product that obtain several different quality different from effect according to size fractionated in step (6).
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105772214A (en) * | 2016-05-09 | 2016-07-20 | 中国地质科学院郑州矿产综合利用研究所 | Mineral separation process for impurity removal and purification of non-metallic ore |
| CN106513336A (en) * | 2016-10-11 | 2017-03-22 | 湖南超牌科技有限公司 | Weathered feldspar machining method and machining device |
| CN107051717A (en) * | 2017-03-20 | 2017-08-18 | 凯盛石英材料（黄山）有限公司 | A kind of method of comprehensive utilization of quartz deposit waste mining rock |
| CN109013057A (en) * | 2018-08-28 | 2018-12-18 | 内蒙古华宸再生资源科技有限公司 | A method of separating feldspar and quartz from granite |
| CN109047039A (en) * | 2018-09-19 | 2018-12-21 | 南京金焰锶业有限公司 | A kind of low-grade strontium mine green optional equipment and technique again |
| CN109734114A (en) * | 2018-03-12 | 2019-05-10 | 孙子涵 | A kind of calcite preparation method of high-content calcium carbonate |
| CN111921598A (en) * | 2020-08-28 | 2020-11-13 | 矿冶科技集团有限公司 | Elastic soft contact overcoming internal stress grinding separation technology and equipment |
| CN112206919A (en) * | 2020-09-17 | 2021-01-12 | 中国地质矿业有限公司 | Beneficiation method for obtaining blocky manganese concentrate |
| CN113019654A (en) * | 2021-03-10 | 2021-06-25 | 广东省科学院资源综合利用研究所 | Method for treating and utilizing waste quartz stone solid waste in jewel processing |
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| CN105772214B (en) * | 2016-05-09 | 2019-06-28 | 中国地质科学院郑州矿产综合利用研究所 | Mineral separation process for impurity removal and purification of non-metallic ore |
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| CN109734114A (en) * | 2018-03-12 | 2019-05-10 | 孙子涵 | A kind of calcite preparation method of high-content calcium carbonate |
| CN109013057A (en) * | 2018-08-28 | 2018-12-18 | 内蒙古华宸再生资源科技有限公司 | A method of separating feldspar and quartz from granite |
| CN109047039A (en) * | 2018-09-19 | 2018-12-21 | 南京金焰锶业有限公司 | A kind of low-grade strontium mine green optional equipment and technique again |
| CN111921598A (en) * | 2020-08-28 | 2020-11-13 | 矿冶科技集团有限公司 | Elastic soft contact overcoming internal stress grinding separation technology and equipment |
| CN111921598B (en) * | 2020-08-28 | 2021-11-05 | 矿冶科技集团有限公司 | Elastic soft contact overcoming internal stress grinding separation technology and equipment |
| CN112206919A (en) * | 2020-09-17 | 2021-01-12 | 中国地质矿业有限公司 | Beneficiation method for obtaining blocky manganese concentrate |
| CN113019654A (en) * | 2021-03-10 | 2021-06-25 | 广东省科学院资源综合利用研究所 | Method for treating and utilizing waste quartz stone solid waste in jewel processing |
| CN113019654B (en) * | 2021-03-10 | 2023-08-29 | 广东省科学院资源利用与稀土开发研究所 | Treatment and utilization method for solid wastes of waste quartz stone in precious stone processing |
| CN113909154A (en) * | 2021-09-29 | 2022-01-11 | 湖南艾非克矿业科技有限公司 | Beneficiation method for copper oxide ore containing malachite and peacock stone |
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