CN105060300A - Quartz sand purification method and device - Google Patents
Quartz sand purification method and device Download PDFInfo
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- CN105060300A CN105060300A CN201510424668.3A CN201510424668A CN105060300A CN 105060300 A CN105060300 A CN 105060300A CN 201510424668 A CN201510424668 A CN 201510424668A CN 105060300 A CN105060300 A CN 105060300A
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Abstract
The invention provides a quartz sand purification method comprising steps as follows: to-be-purified quartz sand is placed in a closed container, HCl/Cl2 gas for impurity removal and bleaching is fed from the bottom of the closed container, and dissolution heat produced in the process increases impurity removal and bleaching speeds; after gas feeding is finished, a gas valve is closed, a compressed air valve is opened, compressed air is fed from the bottom of the closed container, and the HCl/Cl2 gas remaining in the quartz sand is removed; the quartz sand is taken out of the closed container and sent into a washing device to be washed to be neutral. The invention further provides a quartz sand purification device applied to the technology correspondingly. Mass production of quartz sand purification is realized on the premise that the product quality is guaranteed; meanwhile, the technology and the device are also suitable for purification of non-metal ore sand powder such as feldspar sand powder, kaolin sand powder and the like and are wide in application range.
Description
Technical field
The present invention relates to a kind of method and device of quartz sand purifying, belong to non-metal ore advanced processing technical area.
Background technology
Quartz sand is a kind of important Inorganic nonmetal mineral material, and it is widely used in the industries such as glass, pottery, refractory materials as starting material.Due to the difference of the condition that quartz mine is formed, its purity and being also not quite similar for representing foreign matter content with irony, add the not equal factor of the technique of producing sand process and deironing in the sand process processed of quartz sand, cause the iron-holder in finished product quartz sand also different; How to reduce the irony content in quartz sand, improve the purity of quartz sand, meeting the demand of all trades and professions to glass sand, is that quartz sand manufacture field technician constantly researches and develops and innovation subject.
At present, the conventional method of China's purifying quartz sand, except adopting electromagnetic separation than iron, mainly contains the leaching of room temperature acid solution and hot acid state of surging and leaches two kinds; In these two kinds of methods: room temperature acid solution leaches length consuming time, and unstable product quality is difficult to large-scale production; Hot acid state leaching of surging is consuming time short, and constant product quality, can large-scale production, but will increase the expense of heating.The drawback that these two kinds of methods are maximum has in addition had the acid solution of about 10% ~ 20% to remain in quartz sand after acid solution has leached all the time, so a consumption being the increase in acid solution; Two add difficulty to washing procedure afterwards.Therefore, if can develop a kind of novel method and device of purifying quartz sand, carry out industrialization production, this will play a huge promoter action to the development of China's quartz sand industry.
Summary of the invention
The invention solves the deficiency in above-mentioned technology, provide a kind of method and device of brand-new quartz sand purifying, the present invention, under the prerequisite ensureing quality product, achieves the large-scale production to quartz sand purifying; This technique and device are also suitable for the purification of the non-metallic ore powder such as feldspathic sand powder and kaolin sand powder simultaneously, wide application.
Realizing the technical scheme that above-mentioned purpose of the present invention adopts is:
A kind of method of quartz sand purifying, comprise the following steps: (1), by water content to be purified be 3% ~ 10% quartz sand put into encloses container, flatten after filling up container, and the opening for feed of container closed, close the pressurized air valve on encloses container, open HCl/Cl
2gas valve, opens the gas gas absorption tube valve above encloses container simultaneously, and opens the vacuum water tourie and acid fog absorption tower that are connected with gas gas absorption tube;
(2), pass into by the bottom of encloses container the HCl/Cl that pressure is 0.1 ~ 0.2Mpa
2gas, for 20 ~ 120 object quartz sands, per tonly passes into gas 8 ~ 20 kilograms, and for 120 ~ 300 object quartz sands, per tonly pass into gas 10 ~ 30 kilograms, it is 2 ~ 3 hours that gas passes into the time, HCl/Cl
2gas generates acid after meeting water, and for removal of impurities and bleaching, produced solution heat accelerates the speed of removal of impurities and bleaching in the process; Gas after being heated from bottom to top, then the gas gas absorption tube through top enter be only absorbed by the water in vacuum water tourie after become hydrochloric acid; HCl/Cl
2hCl/Cl is closed after gas passes into
2gas valve, and insulation reaction 1 ~ 2 hour;
(3), open pressurized air valve, pass into pressurized air from the bottom of encloses container, HCl/Cl remaining in removing quartz sand
2gas;
(4), by quartz sand take out from encloses container and send in water washing device and be washed with water to neutrality, the quartz sand after washing dewaters and namely completes the purification of quartz sand after drying, and the wash water produced in washing discharges after being neutralized to neutrality.
It is a kind of for the purification device for quartz sand in above-mentioned technique that the present invention goes back providing of correspondence, at least comprise encloses container and vacuum water tourie, acid fog absorption tower and water washing tank, discharge port is positioned at the bottom of encloses container, and the bottom even of encloses container is distributed with groove, breather line is placed with in described groove, described breather line is evenly distributed with the pore that aperture is 0.1mm ~ 5mm, the top of breather line is covered with one deck sand stone layer, the particle diameter of described sandstone is greater than the twice of air vent aperture, the top of sand stone layer is equipped with the grit layer of one deck 50 ~ 100mm, be connected with supervisor after described breather line passes wall of container, described supervisor is connected with a Y-tube, other two ends of Y-tube respectively with HCl/Cl
2flue is connected with compressed air pipe, described HCl/Cl
2flue and HCl/Cl
2gas generating device connects, and compressed air pipe is connected with pressurized air generating apparatus, the top of encloses container is provided with a gas absorption pipe be in communication with the outside, and described gas absorption pipe is connected with vacuum water tourie, and vacuum water tourie is connected with acid fog absorption tower, encloses container is also provided with HCl/Cl
2gas concentration detector, the top of encloses container is provided with opening for feed, and opening for feed is provided with hopper, and the top of hopper is provided with charging belt machine, the top of described water washing tank is provided with conveying belt, is transported in water washing tank by the quartz sand after purification in encloses container and washes.
Described encloses container and the material of breather line are glass reinforced plastic, tetrafluoroethylene, silicon carbide ceramics or carbon fiber, graphite fibre.
Described encloses container is square container or cylindrical vessel, and the discharge port of cylindrical vessel is positioned at the center of container bottom, and the discharge port of square container is positioned at the bottom of container side wall.
Described HCl/Cl
2gas generating device comprises platform scale, liquid gas tank, shower and gas surge tank, wherein liquid gas tank is positioned on platform scale, shower is positioned at the top of liquid gas tank, for the cooling of liquid towards gas tank to control gasification rate, liquid gas tank is connected by pipeline with gas buffer tank, gas buffer tank and HCl/Cl
2flue connects.
Described pressurized air generating apparatus comprises air compressor machine and gas-holder, and air compressor machine stores transferring in gas-holder after air compressing, and gas-holder is connected with compressed air pipe.
Compared with prior art, technical scheme provided by the present invention has the following advantages: in the present invention, the water-soluble rear generation hydrochloric acid of chlorine and hypochlorous acid, and the solution heat recycling self is surperficial with bleaching quartz sand particle to the removal of impurities speed accelerated in quartz sand; Hydrogen chloride gas is met water and is formed hydrochloric acid and the dissolving thermal property of self, accelerates the removal of impurities speed of quartz sand.Chlorine or hydrogen chloride gas can be used respectively separately, also two kinds of gases can be mixed in proportion and use afterwards together again.The maximum feature of this method the present invention is under the prerequisite ensureing removal of impurities speed and quality, has both saved the consumption of chlorine or hydrogen chloride gas and the expense of heating, and has again saved the consumption of wash water; The water content that the present invention is adapted to various granularity about 5% the removal of impurities of quartz sand powder.In addition, unnecessary in process of production gas water can be used as hydrochloric acid and sells after absorbing.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of purification device for quartz sand provided by the invention;
Fig. 2 is the bottom construction schematic diagram of square container;
Fig. 3 is the bottom construction schematic diagram of cylindrical vessel;
In figure: 1-encloses container, 2-vacuum water tourie, 3-acid fog absorption tower, 4-water washing tank, 5-breather line, 6-pore, 7-sand stone layer, 8-grit layer, 9-is responsible for, 10-HCl/Cl
2flue, 11-compressed air pipe, 12-gas absorption pipe, 13-HCl/Cl
2gas concentration detector, 14-hopper, 15-charging belt machine, 16-conveying belt, 17-discharge port, 18-platform scale, the liquid gas tank of 19-, 20-shower, 21-gas buffer tank, 22-air compressor machine, 23-gas-holder.
Embodiment
Below in conjunction with drawings and the specific embodiments, detailed specific description is done to the present invention, but protection scope of the present invention is not limited to following examples.
The one-piece construction of purification device for quartz sand provided by the present invention as shown in Figure 1, at least comprise encloses container 1 and vacuum water tourie 2, acid fog absorption tower 3 and water washing tank 4, discharge port 17 is positioned at the bottom of encloses container 1, and the bottom even of encloses container 1 is distributed with groove, breather line 5 is placed with in described groove, described breather line 5 is evenly distributed with the pore 6 that aperture is 0.1mm ~ 5mm, as shown in Figure 3.The top of breather line 5 is covered with one deck sand stone layer 7, and the particle diameter of described sandstone is greater than the twice of air vent aperture, and the top of sand stone layer 7 is equipped with the grit layer 8 of one deck 50 ~ 100mm, is connected after described breather line 5 passes wall of container with supervisor 9.Described encloses container and the material of breather line are glass reinforced plastic, tetrafluoroethylene, silicon carbide ceramics or carbon fiber, graphite fibre.
Described encloses container 1 is square container or cylindrical vessel, and the discharge port of cylindrical vessel is positioned at the center of container bottom, and as shown in Figure 3, the discharge port of square container is positioned at the bottom of container side wall, as shown in Figure 2.
Described supervisor 9 is connected with a Y-tube, other two ends of Y-tube respectively with HCl/Cl
2flue 10 is connected with compressed air pipe 11, described HCl/Cl
2flue 10 and HCl/Cl
2gas generating device connects, and compressed air pipe 11 is connected with pressurized air generating apparatus.
Described HCl/Cl
2gas generating device comprises platform scale 18, liquid gas tank 19, shower 20 and gas surge tank 21, wherein liquid gas tank 19 is positioned on platform scale 18, shower 20 is positioned at the top of liquid gas tank 19, cool to control gasification rate for liquid towards gas tank 19, liquid gas tank 19 is connected by pipeline with gas buffer tank 21, gas buffer tank 21 and HCl/Cl
2flue 10 connects.
Described pressurized air generating apparatus comprises air compressor machine 22 and gas-holder 23, and air compressor machine 22 stores transferring to after air compressing in gas-holder 23, and gas-holder 23 is connected with compressed air pipe 11.
The top of encloses container is provided with a gas absorption pipe 12 be in communication with the outside, and described gas absorption pipe 12 is connected with vacuum water tourie 2, and vacuum water tourie 2 is connected with acid fog absorption tower 3.Encloses container is also provided with HCl/Cl
2gas concentration detector 13, the top of encloses container is provided with opening for feed, opening for feed is provided with hopper 14, and the top of hopper 14 is provided with charging belt machine 15; The top of described water washing tank 4 is provided with conveying belt 16, and the quartz sand after purification in encloses container is transported in water washing tank and washes by conveying belt.
Embodiment 1
1) with No. 1 quartz sand 30-120 order that Area, Fengyang County, Anhui silica sand Science and Technology Ltd. produces, SiO
2%:99.3%, Fe
2o
3: 0.0164%, H
2o%:5.6% is example.Load weighted quartz sand is put into said apparatus, pile rear levelling, build lid, (now pressurized air valve must be in closing condition to shut relevant valve, chlorine valve is in opened condition), after checking good relevant pipeline valve, open induced draft fan and the spraying lye pump motor of acid fog absorption tower, check that whether the valve of each water tourie, vacuum pressure gauge be normal, check that whether the valve of Chlorine Buffer Vessel, tensimeter be normal, whether the pipeline valve between chlorine pot and surge tank is normal simultaneously.
2) weighed the quality of liquid chlorine tank and performed record, the quality that gas 8 kilograms calculates the liquid chlorine that this time will pass into is passed into according to per ton, the amount of liquid chlorine and the time of ratio is controlled well with intelligent flow meter, slowly open liquid chlorine tank valve after all are normal, make liquid chlorine slowly enter surge tank and gasify to surge tank, after reaching 0.1Mpa, slowly be opened to the pipeline valve of reaction unit again, send into gas in device, control the intake of gas well, in general 3 hours, lead to required gas volume.After having led to, close the valve of liquid chlorine tank, surge tank and access to plant chlorine pipeline successively, insulation reaction, after 2 hours, is opened the pressurized air valve in access to plant, is passed into pressurized air, until the HCl/Cl in device
2till the prescribed value that the concentration that gas concentration detector detects is up to state standards.
3) discharge port of opening device, sends quartz sand into water washing device, washs pH value in neutral, after dehydrating, after testing: SiO with clear water
2%:99.5%, Fe
2o
3: 0.0043%.
Embodiment 2
1) with No. 2 quartz sand 30-120 orders that Area, Fengyang County, Anhui silica sand Science and Technology Ltd. produces, SiO
2%:99.3%, Fe
2o
3: 0.0235%, H
2o%:6.3% is example.Load weighted quartz sand is put into this device, pile rear levelling, build lid, (now pressurized air valve must be in closing condition to shut relevant valve, hydrogen chloride gas valve is in opened condition), after checking good relevant pipeline valve, open induced draft fan and the spraying lye pump motor of acid fog absorption tower, check that whether the valve of each water tourie, vacuum pressure gauge be normal, check that whether the valve of hydrogenchloride surge tank, tensimeter be normal, whether the pipeline valve between hydrogenchloride tank and surge tank is normal simultaneously.
2) weigh the quality of good chlorination processes hydrogen tank and perform record, the quality that gas 10 kilograms calculates the liquid hydrogenchloride that this time will pass into is passed into according to per ton, grasp and control the time passing into hydrogen chloride gas well, chlorination processes hydrogen tank valve is slowly opened after all are normal, make chlorination processes hydrogen slowly enter surge tank to gasify to surge tank, after reaching 0.1Mpa, slowly be opened to the pipeline valve of reaction unit again, hydrogen chloride gas is sent into in device, control the intake of gas well, in general 3 hours, lead to the required hydrogen chloride gas scale of construction.After having led to, close the valve of chlorination processes hydrogen tank, surge tank and hydrogenchloride pipeline successively, insulation reaction, after 2 hours, is opened the pressurized air valve in access to plant, is passed into pressurized air, until the HCl/Cl in device
2till the prescribed value that the concentration that gas concentration detector detects is up to state standards.
3) discharge port of opening device, sends quartz sand into water washing device, washs pH value in neutral, after dehydrating, after testing: SiO with clear water
2%:99.5%, Fe
2o
3: 0.0053%.
Embodiment 3
1) with the 30-120 order quartz sand that the quartzy Science and Technology Ltd. of Huanggang produces, SiO
2%:99.7%, Fe
2o
3: 0.01%, H
2o%:5.6% is example.Load weighted quartz sand is put into this device, pile rear levelling, build lid, (now pressurized air valve must be in closing condition to shut relevant valve, chlorine valve is in opened condition), after checking good relevant pipeline valve, open induced draft fan and the spraying lye pump motor of acid fog absorption tower, check that whether the valve of each water tourie, vacuum pressure gauge be normal, check that whether the valve of Chlorine Buffer Vessel, tensimeter be normal, whether the pipeline valve between chlorine pot and surge tank is normal simultaneously.
2) weighed the quality of liquid chlorine tank and performed record, the quality that gas 20 kilograms calculates the liquid chlorine that this time will pass into is passed into according to per ton, grasp and control the time passing into chlorine well, slowly open liquid chlorine tank valve after all are normal, make liquid chlorine gas slowly enter surge tank and gasify to surge tank, after reaching 0.15Mpa, slowly be opened to the pipeline valve of reaction unit again, send into chlorine in device, control the intake of gas well, in 3 hours, lead to required chlorine gas volume.After having led to, close the valve of liquid chlorine tank, surge tank and chlorine pipeline successively, insulation reaction, after 2 hours, is opened the pressurized air valve in access to plant, is passed into pressurized air, until the HCl/Cl in device
2till the prescribed value that the concentration that gas concentration detector detects is up to state standards.
3) discharge port of opening device, sends quartz sand into water washing device, washs pH value in neutral with clear water, then with electronic-grade pure water to the electronics rate of wash water is identical with pure water, after dehydration, through detection: SiO after drying
2%:99.98%, Fe
2o
3: 0.0004%.
Embodiment 4
1) with the quartzy Science and Technology Ltd. of Huanggang produce the desliming of 120-300 order dehydration after tailings, SiO
2%:99.5%, Fe
2o
3: 0.03%, H
2o%:8% is example.Load weighted tailings is put into this device, pile rear levelling, build lid, (now pressurized air valve must be in closing condition to shut relevant valve, chlorine and hydrogen chloride gas valve are in opened condition), after checking good relevant pipeline valve, open induced draft fan and the spraying lye pump motor of acid fog absorption tower, check that whether the valve of each water tourie, vacuum pressure gauge be normal, check that whether the valve of Chlorine Buffer Vessel, tensimeter be normal, whether the pipeline valve between hydrogenchloride tank and surge tank is normal simultaneously.
2) weighed the quality of liquid chlorine and hydrogenchloride tank and performed record, the quality that gas 30 kilograms calculates liquid chlorine that this time will pass into and liquid hydrogenchloride is passed into according to per ton, with intelligent flow meter setting and the flow passing into liquid chlorine and chlorination processes hydrogen (mass ratio or volume ratio by 1:1) of controlling well, liquid chlorine and chlorination processes hydrogen tank valve is slowly opened after all are normal, make liquid chlorine and chlorination processes hydrogen slowly enter surge tank to gasify to surge tank, after reaching 0.2Mpa, slowly be opened to the pipeline valve of reaction unit again, to sending into chlorine and chlorine hydride mixed gas body in device, control the intake of gas well, the required gas mixture scale of construction has been led in general 3 hours.After having led to, close the valve of liquid chlorine tank, chlorination processes hydrogen tank, surge tank and access to plant chlorine and hydrogen chloride gas pipeline successively, insulation reaction after 2 hours, then opens the pressurized air valve in access to plant, passes into pressurized air, until the HCl/Cl in device
2till the prescribed value that the concentration that gas concentration detector detects is up to state standards.
3) discharge port of opening device, sends quartz sand into water washing device, washs pH value in neutral, after dehydrating, after testing: SiO with clear water
2%:99.7%, Fe
2o
3: 0.0075%.
Claims (6)
1. the method for a quartz sand purifying, it is characterized in that comprising the following steps: (1), by water content to be purified be 3% ~ 10% quartz sand put into encloses container, flatten after filling up container, and the opening for feed of container is closed, close the pressurized air valve on encloses container, open HCl/Cl
2gas valve, opens the gas absorption tube valve above encloses container simultaneously, and opens the vacuum water tourie and acid fog absorption tower that are connected with gas absorption pipe;
(2), pass into by the bottom of encloses container the HCl/Cl that pressure is 0.1 ~ 0.2Mpa
2gas, for 20 ~ 120 object quartz sands, per tonly passes into gas 8 ~ 20 kilograms, and for 120 ~ 300 object quartz sands, per tonly pass into gas 10 ~ 30 kilograms, it is 2 ~ 3 hours that gas passes into the time, HCl/Cl
2gas generates acid after meeting water, and for removal of impurities and bleaching, produced solution heat accelerates the speed of removal of impurities and bleaching in the process; Gas after being heated from bottom to top, then the gas absorption pipe through top enter be only absorbed by the water in vacuum water tourie after become hydrochloric acid; HCl/Cl
2hCl/Cl is closed after gas passes into
2gas valve, and insulation reaction 1 ~ 2 hour;
(3), open pressurized air valve, pass into pressurized air from the bottom of encloses container, HCl/Cl remaining in removing quartz sand
2gas;
(4), by quartz sand take out from encloses container and send in water washing device and be washed with water to neutrality, the quartz sand after washing dewaters and namely completes the purification of quartz sand after drying, and the wash water produced in washing discharges after being neutralized to neutrality.
2. one kind for the purification device for quartz sand in claim 1, at least comprise encloses container and vacuum water tourie, acid fog absorption tower and water washing tank, it is characterized in that: discharge port is positioned at the bottom of encloses container, and the bottom even of encloses container is distributed with groove, breather line is placed with in described groove, described breather line is evenly distributed with the pore that aperture is 0.1mm ~ 5mm, the top of breather line is covered with one deck sand stone layer, the particle diameter of described sandstone is greater than the twice of air vent aperture, the top of sand stone layer is equipped with the grit layer of one deck 50 ~ 100mm, be connected with supervisor after described breather line passes wall of container, described supervisor is connected with a Y-tube, other two ends of Y-tube respectively with HCl/Cl
2flue is connected with compressed air pipe, described HCl/Cl
2flue and HCl/Cl
2gas generating device connects, and compressed air pipe is connected with pressurized air generating apparatus, the top of encloses container is provided with a gas absorption pipe be in communication with the outside, and described gas absorption pipe is connected with vacuum water tourie, and vacuum water tourie is connected with acid fog absorption tower, encloses container is also provided with HCl/Cl
2gas concentration detector, the top of encloses container is provided with opening for feed, and opening for feed is provided with hopper, and the top of hopper is provided with charging belt machine, the top of described water washing tank is provided with conveying belt, is transported in water washing tank by the quartz sand after purification in encloses container and washes.
3. purification device for quartz sand according to claim 2, is characterized in that: described encloses container and the material of breather line are glass reinforced plastic, fluoroplastics, silicon carbide ceramics or carbon fiber, graphite fibre.
4. purification device for quartz sand according to claim 2, it is characterized in that: described encloses container is square container or cylindrical vessel, the discharge port of cylindrical vessel is positioned at the center of container bottom, and the discharge port of square container is positioned at the bottom of container side wall.
5. purification device for quartz sand according to claim 2, is characterized in that: described HCl/Cl
2gas generating device comprises platform scale, liquid gas tank, shower and gas surge tank, wherein liquid gas tank is positioned on platform scale, shower is positioned at the top of liquid gas tank, for the cooling of liquid towards gas tank to control gasification rate, liquid gas tank is connected by pipeline with gas buffer tank, gas buffer tank and HCl/Cl
2flue connects.
6. purification device for quartz sand according to claim 2, is characterized in that: described pressurized air generating apparatus comprises air compressor machine and gas-holder, and air compressor machine stores transferring in gas-holder after air compressing, and gas-holder is connected with compressed air pipe.
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|---|---|---|---|
| CN201510424668.3A CN105060300B (en) | 2015-07-20 | 2015-07-20 | Quartz sand purification method and device |
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|---|---|---|---|
| CN201510424668.3A CN105060300B (en) | 2015-07-20 | 2015-07-20 | Quartz sand purification method and device |
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| CN105060300B CN105060300B (en) | 2017-02-22 |
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| CN105936509A (en) * | 2016-06-01 | 2016-09-14 | 安徽晶晶石英科技有限公司 | Purifying method of ultralow-metal element highly pure quartz |
| CN106219488A (en) * | 2016-08-08 | 2016-12-14 | 田晋丞 | A kind of method and device preparing hydrochloric acid purifying quartz sand |
| CN109529442A (en) * | 2019-01-03 | 2019-03-29 | 湖北省通发矿业有限责任公司 | A kind of filter device removing iron removal of impurities reaction tank for quartz sand acid |
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|---|---|
| CN105060300B (en) | 2017-02-22 |
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