CN117983399A - Method for purifying quartz ore mixed with superfine micro mica - Google Patents
Method for purifying quartz ore mixed with superfine micro mica Download PDFInfo
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- CN117983399A CN117983399A CN202410027017.XA CN202410027017A CN117983399A CN 117983399 A CN117983399 A CN 117983399A CN 202410027017 A CN202410027017 A CN 202410027017A CN 117983399 A CN117983399 A CN 117983399A
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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
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Abstract
The invention relates to a method for purifying quartz ore mixed with superfine micro mica, which is characterized by comprising the following steps: (1) Firstly, carrying out three-section crushing and pre-screening on the deposited metamorphic quartz rock, scrubbing a sample with the particle size smaller than 0.6mm, wherein a scrubbing medium is water, and scrubbing for 5-60 min; grinding and screening the sample with the particle size of more than 0.6mm to obtain a sample with the particle size of less than 0.6 mm; (2) Classifying the scrubbed sample and the sample with the particle size smaller than 0.6mm obtained after grinding and screening; the graded sand setting is subjected to multi-section reselection and multi-section magnetic separation; (3) Performing ultrasonic scrubbing and floatation on the magnetic separation refined sand to obtain floatation refined sand; wherein the medium for ultrasonic scrubbing is water, the temperature is 20-80 ℃, and the power is 190-500W; and the flotation takes sulfuric acid as a pH regulator, the pH of ore pulp is regulated to be 2-3, the collecting agents are SX1 and SX2, and the total amount of the collecting agents is 0.5-6.0 kg/t. The invention has the advantages that: the fine mica among quartz particles is effectively stripped through ultrasonic high-frequency scrubbing, so that the flotation times are reduced, the yield is improved, and the dosage of flotation agents is reduced.
Description
Technical Field
The invention relates to the technical field of non-metal mineral deep processing, in particular to a method for purifying quartz ore mixed with ultrafine micro mica.
Background
Quartz is a silicate mineral with hardness, wear resistance and stable chemical property, and is a main source of siliceous mineral raw materials for glass, metallurgy, ceramics and the like. According to different geological causes and the types of impurity minerals, the mineral separation and purification methods of quartz rock ores are different, and the development and utilization characteristics are also greatly different. The quartz rock ore in a certain area of inner Mongolia is deposition modified quartz rock, and main associated minerals are feldspar and muscovite (sericite), wherein the muscovite is mostly fine, most impurity minerals and quartz are closely associated or are packed in the quartz in fine particles to fine particles, so that the quality of the final quartz sand concentrate is greatly influenced. Although the impurity minerals such as mica in the quartz can be effectively removed by combining the conventional physical mineral separation process with the flotation operation, the fine mica and quartz in the sample are continuously shaped, so that multistage flotation is required, part of quartz is inevitably entrained, and the conventional scrubbing operation has poor dissociation effect on quartz particles, so that the flotation yield is low.
Disclosure of Invention
The invention aims to solve the problem that fine mica and quartz are in a continuous shape and the floatation rate is low, and provides a method for purifying quartz ore mixed with ultrafine mica. The invention adopts a scrubbing method of high-frequency ultrasonic waves, and utilizes the scrubbing effect of high-frequency pressure waves and the cavitation effect of ultrasonic waves in liquid to strip fine mica among particles, thereby achieving the purposes of reducing the floatation times and improving the product yield.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the purification method of the quartz ore mixed with the superfine micro mica is characterized by comprising the following steps:
(1) Firstly, carrying out three-stage crushing and pre-screening on deposited metamorphic quartz rock to remove fine-particle-grade adherents on the surface of minerals, scrubbing a sample with the particle size smaller than 0.6mm to remove the cementitious clay minerals on the surface of the minerals, wherein a scrubbing medium is water, and the scrubbing time is controlled within 5-60 min; grinding and screening the sample with the particle size of more than 0.6mm to obtain a sample with the particle size of less than 0.6 mm;
(2) Classifying the scrubbed sample and the sample with the particle size smaller than 0.6mm obtained after grinding and screening, and removing classified fine sand with the particle size smaller than 0.1 mm; removing impurity minerals such as large-particle mica, heavy minerals and the like from the classified sand through multistage reselection; performing multistage magnetic separation on the reselected sample to remove magnetite, pyrite and other magnetic minerals;
(3) Sequentially performing ultrasonic scrubbing (mainly dissociating quartz particles with fine particle sizes, removing fine mica among the quartz particles and inside the particles and dip-dyeing iron on the quartz surface) and floatation on the magnetic separation concentrate to obtain floatation concentrate; wherein the medium for ultrasonic scrubbing is water, the temperature is 20-80 ℃, and the power is 190-500W; the flotation is carried out by taking sulfuric acid as a pH regulator, regulating the pH of ore pulp to be 2-3, and collecting agents to be SX1 and SX2, wherein the mass ratio of SX1 to SX2 is 5:1-1:1, and the total amount of the collecting agents is 0.5-6.0 kg/t; under the acidic condition, the iron-containing aluminosilicate minerals such as quartz sand and inter-particle fine mica, iron oxide dip-dyed quartz sand and metal oxides are effectively separated through the action of a collector.
Further, in the step (1), three-stage crushing is coarse crushing, medium crushing and fine crushing, wherein equipment adopted for crushing is a jaw crusher, and the granularity control indexes of the coarse crushing, the medium crushing and the fine crushing are respectively 150mm, 30mm and 15mm.
Further, the rotating speed of the scrubbing machine in the step (1) is 600r/min, and the granularity of the product is controlled through a-0.105 mm grid screen during desliming, so that the outflow of refined sand is avoided.
Further, the equipment adopted in the grinding in the step (1) is a wet rod mill, the grinding time is 5 min-10 min, and coarse sand is returned to the mill after grinding and is fed to the mill together with the next batch of samples.
And (3) the equipment adopted in the step (2) is a hydraulic classifier, the rising water quantity is regulated to 60-80% of the classifying process in the feeding process, and the rising water quantity is increased to 180 L.h -1 after the feeding of the feeding trough sample is finished.
Further, the equipment adopted in the step (2) is a spiral chute, the number of the sections for reselection is 1-3, and the chute water quantity is 800-900L.h -1.
Further, the multi-stage magnetic separation in the step (2) is 1-2 stages of magnetic separation and 1-3 stages of strong magnetic separation; the intensity of the medium magnetic separation is 5000mT, and the intensity of the strong magnetic separation is 12000 mT-15000 mT.
Further, in the step (3), the ultrasonic high-frequency scrubbing is normal-temperature scrubbing, the strong magnetic refined sand is used as the selected sand, the scrubbing medium is water, the scrubbing time is 20min, and the scrubbing power is 190W.
And (3) performing flotation, namely performing ultrasonic scrubbing refined sand as the flotation sand in the step, and performing flotation operation after stirring and deacidifying for a plurality of times.
The invention has the advantages that:
According to the invention, fine mica among quartz particles can be effectively stripped through ultrasonic high-frequency scrubbing, so that the flotation times are reduced, the yield of low-iron quartz sand products for photovoltaic glass is improved (from about 54.05% to about 59.48%) and the dosage of flotation agents is reduced; the chemical index and the granularity index of the low-iron quartz raw material for the photovoltaic glass prepared by the invention are shown in table 1:
Drawings
FIG. 1 is a schematic diagram of a process for purifying quartz ore with ultrafine mica inclusions.
Detailed Description
The invention is further described with reference to fig. 1:
the method for purifying quartz ore with superfine mica comprises the following specific implementation steps:
Taking the inner Mongolia as an example, the metamorphic quartz rock is deposited on a certain place, the mineral is a grey lump ore, dmax=300 mm, the whole granularity is concentrated at 100-300 mm, the main mineral composition is quartz, muscovite (sericite), zircon, magnetite, pyrite, chalcopyrite and the like, and the fine particles are more.
Example 1
(1) Carrying out coarse crushing, medium crushing and fine crushing on the deposited metamorphic quartz rock by adopting a jaw crusher, wherein the granularity control indexes of coarse crushing, medium crushing and fine crushing are respectively 150mm, 30mm and 15mm, and the three-section crushed ore is manufactured into a-3.2 mm sample by a pair of rollers;
(2) Pre-screening the sample, grinding the sample with +0.6mm by adopting a wet method rod mill, controlling the concentration of ore pulp to be 50%, grinding the ore for 5.5min, and mixing the rod (phi 22mm: phi 19mm: phi 15 mm) 5:4:1, a step of; screening the ground sample to obtain a sample with the particle size smaller than 0.6 mm;
(3) The 0.6mm sample contains partial muddy matter, a scrubbing machine (600 r/min) is used for scrubbing operation removal, a scrubbing medium is water, the scrubbing mass concentration is 50%, and the scrubbing time is 10min;
(4) In order to meet the granularity index requirement of quartz sand for the glass industry, classifying the samples with the grain size smaller than 0.6mm obtained by grinding and screening and the scrubbed samples by a hydraulic classifier (the rising water amount is regulated to 80% of the classification process in the feeding process, and after the feeding of the feed trough samples is finished, the rising water amount is increased to 180 L.h -1), and removing the samples with the grain size of-0.1 mm and residual argillnesses;
(5) In order to remove magnetite, pyrite and other heavy minerals and large-particle mica in the sample, the classified sand setting is treated by adopting two-section reselection (spiral chute, and the chute water quantity is 900L.h -1);
(6) Purifying the gravity concentrate by adopting a medium magnetic-strong magnetic process to remove magnetic impurity minerals in the sample, wherein the medium magnetic field strength is 5000mT, and the strong magnetic field strengths are 12000mT and 15000 mT respectively;
(7) Performing ultrasonic high-frequency scrubbing on the magnetic separation refined sand, wherein a scrubbing medium is water, the scrubbing time is 20min, and the scrubbing power is 190W;
(8) And (3) performing acid reverse flotation on the scouring concentrate, wherein sulfuric acid is used as a pH regulator, the pH of ore pulp is regulated to be 2, the consumption and the proportion of the collectors SX1 and SX2 (manufactured by the middle building material clam port glass industry design institute Co., ltd.) are SX 1/SX2=1:1 (namely 1.05/1.05 kg.t -1), and the flotation concentrate is obtained.
The raw ore and the purified refined sand result are shown in Table 2:
The flotation refined sand prepared according to the process flow and the conditions meets the quality requirement of siliceous raw materials for ultra-white glass.
Example 2
The above-mentioned deposit-modified quartz cliffside marginal mining area was used as a verification sample, and a verification test was performed thereon, and the verification test procedure was the same as in example 1.
The raw ore and the purified refined sand result are shown in Table 3:
The integral quality of the verification sample is poor, and the index of the refined sand after mineral separation and purification just meets the quality requirement of siliceous raw materials for ultra-white glass. Aiming at the deposition of metamorphic quartzite in a certain place of inner Mongolia, more sections of flotation beneficiation are carried out, and the yield of the refined sand can be improved by about 4% by adopting ultrasonic scrubbing.
Claims (9)
1. The purification method of the quartz ore mixed with the superfine micro mica is characterized by comprising the following steps:
(1) Firstly, carrying out three-stage crushing and pre-screening on deposited metamorphic quartz rock to remove fine-particle-grade adherents on the surface of minerals, scrubbing a sample with the particle size smaller than 0.6mm to remove the cementitious clay minerals on the surface of the minerals, wherein a scrubbing medium is water, and the scrubbing time is controlled within 5-60 min; grinding and screening the sample with the particle size of more than 0.6mm to obtain a sample with the particle size of less than 0.6 mm;
(2) Classifying the scrubbed sample and the sample with the particle size smaller than 0.6mm obtained after grinding and screening, and removing classified fine sand with the particle size smaller than 0.1 mm; the graded sand setting is subjected to multi-section reselection; carrying out multistage magnetic separation on the reselected sample;
(3) Sequentially performing ultrasonic scrubbing and floatation on the magnetic separation refined sand to obtain floatation refined sand; wherein the medium for ultrasonic scrubbing is water, the temperature is 20-80 ℃, and the power is 190-500W; and the flotation is carried out by taking sulfuric acid as a pH regulator, regulating the pH of ore pulp to be 2-3, and collecting agents to be SX1 and SX2, wherein the mass ratio of SX1 to SX2 is 5:1-1:1, and the total amount of the collecting agents is 0.5-6.0 kg/t.
2. The method for purifying quartz ore with ultrafine micas in claim 1, wherein: the three-stage crushing in the step (1) is coarse crushing, medium crushing and fine crushing, wherein the crushing equipment is a jaw crusher, and the granularity control indexes of the coarse crushing, the medium crushing and the fine crushing are respectively 150mm, 30mm and 15mm.
3. The method for purifying quartz ore with ultrafine micas in claim 1, wherein: the rotating speed of the scrubbing machine in the step (1) is 600r/min, and the granularity of the product is controlled through a-0.105 mm grid screen during desliming, so that the outflow of refined sand is avoided.
4. The method for purifying quartz ore with ultrafine micas in claim 1, wherein: the equipment adopted in the step (1) is a wet rod mill, the milling time is 5 min-10 min, and coarse sand is returned to the mill after milling and is fed into the mill together with the next batch of samples.
5. The method for purifying quartz ore with ultrafine micas in claim 1, wherein: the equipment adopted in the step (2) is a hydraulic classifier, the rising water quantity is regulated to 60-80% of the classifying process in the feeding process, and the rising water quantity is increased to 180 L.h -1 after the feeding of the feeding trough sample is finished.
6. The method for purifying quartz ore with ultrafine micas in claim 1, wherein: the equipment adopted in the step (2) is a spiral chute, the number of the sections for reselection is 1-3, and the chute water quantity is 800-900L.h -1.
7. The method for purifying quartz ore with ultrafine micas in claim 1, wherein: the multi-stage magnetic separation in the step (2) is 1-2 stages of magnetic separation and 1-3 stages of strong magnetic separation; the intensity of the medium magnetic separation is 5000mT, and the intensity of the strong magnetic separation is 12000 mT-15000 mT.
8. The method for purifying quartz ore with ultrafine micas in claim 1, wherein: in the step (3), the ultrasonic high-frequency scrubbing is normal-temperature scrubbing, the strong magnetic refined sand is used as the sand for entering selection, the scrubbing medium is water, the scrubbing time is 20min, and the scrubbing power is 190W.
9. A method for purifying a quartz ore doped with ultrafine micas in any one of claims 1 to 8, wherein: and (3) performing flotation, namely performing ultrasonic scrubbing refined sand as the flotation sand in the step (3), and performing flotation operation after stirring and deacidifying for a plurality of times.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN119608357A (en) * | 2024-12-07 | 2025-03-14 | 武汉理工大学 | A method for dissociating high-roughness quartz sand |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN119608357A (en) * | 2024-12-07 | 2025-03-14 | 武汉理工大学 | A method for dissociating high-roughness quartz sand |
| CN119608357B (en) * | 2024-12-07 | 2025-09-05 | 武汉理工大学 | A method for dissociating high-roughness quartz sand |
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