CN109939831B - Automatic control heating and vulcanizing system for lead zinc oxide ores - Google Patents
Automatic control heating and vulcanizing system for lead zinc oxide ores Download PDFInfo
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- CN109939831B CN109939831B CN201910264477.3A CN201910264477A CN109939831B CN 109939831 B CN109939831 B CN 109939831B CN 201910264477 A CN201910264477 A CN 201910264477A CN 109939831 B CN109939831 B CN 109939831B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 141
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 239000011787 zinc oxide Substances 0.000 title claims abstract description 33
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 99
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 71
- 238000005188 flotation Methods 0.000 claims abstract description 24
- 238000003756 stirring Methods 0.000 claims abstract description 18
- -1 sulfide ions Chemical class 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 6
- 230000002411 adverse Effects 0.000 claims abstract description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 5
- 239000001257 hydrogen Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 49
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 20
- 239000011707 mineral Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 229920000742 Cotton Polymers 0.000 claims description 13
- 238000004321 preservation Methods 0.000 claims description 12
- 230000002265 prevention Effects 0.000 claims description 9
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000004073 vulcanization Methods 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 claims description 5
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims 2
- 239000011593 sulfur Substances 0.000 claims 2
- 238000013021 overheating Methods 0.000 claims 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 abstract description 2
- 239000005751 Copper oxide Substances 0.000 abstract description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 2
- 229910000431 copper oxide Inorganic materials 0.000 abstract description 2
- 239000000428 dust Substances 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 abstract description 2
- 239000011701 zinc Substances 0.000 abstract description 2
- 229910052725 zinc Inorganic materials 0.000 abstract description 2
- 239000012991 xanthate Substances 0.000 description 12
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 9
- 229910000464 lead oxide Inorganic materials 0.000 description 9
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 229910000365 copper sulfate Inorganic materials 0.000 description 5
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 5
- 229910052979 sodium sulfide Inorganic materials 0.000 description 5
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 5
- 238000005987 sulfurization reaction Methods 0.000 description 5
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000003112 inhibitor Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 239000004115 Sodium Silicate Substances 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 3
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- GCPRNIZDNTXQIX-NBPLQZBRSA-N 1-chloro-2-(2-chloroethylsulfanyl)ethane;dichloro-[(e)-3-chloroprop-2-enyl]arsane Chemical compound ClCCSCCCl.Cl\C=C\C[As](Cl)Cl GCPRNIZDNTXQIX-NBPLQZBRSA-N 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229960004887 ferric hydroxide Drugs 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 1
- 229910052981 lead sulfide Inorganic materials 0.000 description 1
- 229940056932 lead sulfide Drugs 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010665 pine oil Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
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- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
The invention relates to an automatic control heating vulcanizing system for lead zinc oxide ores, which is pretreatment equipment before floatation of the lead zinc oxide ores. Is suitable for lead zinc oxide ore; copper oxide ores; zinc-containing smoke dust treatment, in particular to heating and vulcanizing treatment of oxidized nonferrous metal ores in alpine regions. The device consists of a pulp density mixing barrel, an electromagnetic induction heating vulcanizing barrel, a variable frequency stirring device, a heat exchange high temperature preventing device, an automatic vulcanizing agent adding control device, an air inlet preventing device, an electromagnetic induction heating power supply and an industrial computer. The density range of the ore pulp is controlled to be 1.05-1.15 by an industrial computer; controlling the working temperature of the heating vulcanizing barrel to be 35-95 ℃; the amount of vulcanizing agent added is controlled in the range of pH8 to pH14. The accurate addition of the vulcanizing agent reduces the consumption of the vulcanizing agent and reduces the adverse effect of harmful sulfide ions (S) and sulfide hydrogen ions (HS) in ore pulp on subsequent flotation.
Description
Technical Field
The invention relates to heating and vulcanizing equipment for lead zinc oxide ores, which is pretreatment equipment before floatation of the lead zinc oxide ores. The method is suitable for heating and vulcanizing the lead zinc oxide ores; heating and vulcanizing copper oxide ores; heating and vulcanizing zinc-containing smoke dust. Is especially suitable for heating and vulcanizing the oxidized nonferrous metal ore before floatation in high-cold and high-altitude areas.
Background
The yellow reagent floatation method is used after sulfuration in the prior art for floating lead oxide minerals. The mechanism of the sulfuration-xanthate method is that lead oxide is subjected to surface sulfuration in advance, so that the surface of the lead oxide is covered with a layer of sulfide film with stronger hydrophobicity, and then the flotation is carried out by using xanthate collecting agents. The vulcanizing agent commonly used is sodium sulfide. However, the process conditions are required to be paid attention to during the vulcanization, and the excessive sodium sulfide cannot cause the concentration of the sulfide hydrogen ions HS and the sulfide ions S in the ore pulp to be too high, so that the floating of the vulcanized lead oxide mineral can be inhibited. A large amount of sodium sulfide leads the pH value of ore pulp to exceed +/-0.5, and when oversulfiding and undersulfiding are used for flotation, part of lead oxide is lost in tailings, so that the flotation recovery rate of lead is low. The low-speed non-aerated stirring is preferably used during vulcanization to reduce sodium sulfide oxidation and avoid spalling of sulfide films on the surfaces of ore particles, and the pH value of floatation should be kept at 8.5-11. The usage amount of vulcanizing agent and collecting agent xanthate is high, water glass, sodium hexametaphosphate and other gangue inhibitors are needed to be added, the flotation process is not well controlled, lead foam easily falls into a groove, the production cost is high, and lead oxide with high iron content cannot be floated.
Zinc oxide ore floatation in the prior art can be used in industry at present by a xanthate floatation method after heating and vulcanizing. The mechanism of the sulfuration-xanthate method is that zinc oxide is subjected to surface sulfuration in advance, so that the surface of the zinc oxide is covered with a layer of sulfide film with stronger hydrophobicity, and then the flotation is carried out by using xanthate collecting agents. Early researches found that when the temperature of ore pulp is heated to 50-60 ℃, the sulfuration of zinc oxide minerals and the adsorption of medicaments are facilitated, but the excessive sulfuration agent can inhibit the actions of xanthate and the surfaces of minerals, and the zinc oxide minerals can be collected by the xanthate after being sulfurated by adding copper sulfate. The sulfuration-xanthate method is that firstly, fine mud smaller than 0.001mm is removed, after concentration, ore pulp is heated to 50-70 ℃, then zinc oxide ore is sulfurated by sodium sulfide, and the sulfurated zinc oxide ore is activated by adding copper sulfate, finally, long-chain xanthate is used as main collector, diesel oil, tar and the like are used as auxiliary collector, pine oil is used as foaming agent, sodium silicate is used as gangue inhibitor, and zinc oxide ore is floated. The method for heating and floating zinc oxide ore can obtain better technological indexes, but in the production process, the method often fluctuates because of improper control of various factors, and the effect is worse if the raw ore contains a large amount of ferric hydroxide. The flotation process is difficult to control, and the zinc oxide flotation recovery rate with high iron content is low. The coal-fired or gas-fired boiler and the resistance wire are adopted to indirectly heat the ore pulp, so that the total heating quantity of the ore pulp is high, the heating speed is low, the heat efficiency is low, and the heating cost is high. The vulcanizing agent has high oxidation loss, the vulcanizing agent, the activating agent, the copper sulfate and the collecting agent xanthate have high dosage, the heating cost is high, and the equipment cannot be large-sized and automated.
Disclosure of Invention
In order to overcome the defect that the adding amount of a vulcanizing agent cannot be accurately controlled in the flotation process of lead zinc oxide ores in the prior art, the zinc oxide surface is covered with a layer of sulfide film with stronger hydrophobicity, the flotation operation process is complicated, the heating total amount of ore pulp is high, the heating speed is low, the heat efficiency is low, and the heating cost is high. The vulcanizing agent has high oxidation loss, the vulcanizing agent, the activating agent, the copper sulfate and the collecting agent xanthate have higher dosage, the heating cost is high, and the equipment cannot be large-sized and automated. The invention provides a heating and vulcanizing system which adopts a density sensor to automatically adjust ore pulp, a pH sensor to automatically control the addition amount of vulcanizing agent and an automatic temperature control electromagnetic induction heating technology, thereby rapidly, efficiently and stably completing the heating and vulcanizing treatment of lead zinc oxide ores.
The technical scheme adopted for solving the technical problems is as follows: an automatic control heating vulcanizing system for lead zinc oxide ores comprises an automatic control ore pulp density size mixing barrel, an automatic control electromagnetic induction heating vulcanizing barrel, a variable frequency stirring device, an automatic control heat exchange high temperature prevention device, an automatic control vulcanizing agent adding device, an automatic control air inlet heating vulcanizing barrel device, an electromagnetic induction heating power supply and an industrial computer.
The automatic control heating vulcanizing system for the lead zinc oxide ores is characterized in that the automatic control pulp density pulp mixing barrel comprises a pulp mixing barrel, a variable frequency stirring device, a mineral feeding pipe, a clear water electromagnetic valve, a clear water pipe, a pulp density sensor and an industrial computer. The ball-milled ore pulp is fed into a pulp mixing barrel through an ore feeding pipe, the ore pulp is stirred by a variable-frequency stirring device to be in a suspension state, a density signal of the ore pulp measured by an ore pulp density sensor is transmitted to an industrial computer, and the industrial computer is used for analysis and treatment. When the density of the ore pulp measured by the ore pulp density sensor is larger than a set value of an industrial computer, the industrial computer controls the clear water electromagnetic valve to be opened, clear water in the clear water pipe enters the pulp mixing barrel through the clear water electromagnetic valve and the ore feeding pipe to dilute the ore pulp, and when the density of the ore pulp measured by the ore pulp density sensor is smaller than the set value of the industrial computer, the industrial computer controls the clear water electromagnetic valve to be closed, so that the automatic control of the density of the ore pulp is completed, and the density range of the ore pulp controlled by the industrial computer is 1.05-1.15. The adjustment of the pulp density, namely the adjustment of the liquid-ore ratio, is beneficial to the subsequent heating vulcanization and floatation.
The automatic control heating vulcanizing system for the lead zinc oxide ores comprises a heating vulcanizing barrel, a variable frequency stirring device, a self-suction ore feeding pipe, a main impeller, an auxiliary impeller, a heat exchange pipe, a temperature sensor, an electromagnetic induction heating coil, an electromagnetic induction heating power supply, a temperature thermistor, an industrial computer, heat preservation cotton and an ore discharging pipe. The variable frequency stirring device is started to drive the main impeller and the auxiliary impeller to rotate, pulp which is sucked by the self-suction ore feeding pipe and mixed with the vulcanizing agent is pumped into the heat exchange pipe by the main impeller and then returns to the middle upper part of the heating vulcanizing barrel, and the pulp is suspended by the rotation of the auxiliary impeller to finish heating vulcanizing and is discharged by the ore discharging pipe. The heat preservation cotton is wrapped outside the heating vulcanizing barrel and the heat exchange tube and is used for preserving heat and reducing heat loss. The electromagnetic induction heating coil is wound outside the heat-insulating cotton heat exchange tube and connected with an electromagnetic induction heating power supply, the working temperature of the heating vulcanizing barrel is controlled by the industrial computer to be 35-95 ℃, when the temperature signal obtained by the temperature sensor is greater than the temperature set by the industrial computer, the industrial computer gives a stop signal to the electromagnetic induction heating power supply, the electromagnetic induction heating power supply stops working, when the temperature signal obtained by the temperature sensor is less than the temperature set by the industrial computer, the industrial computer gives a starting signal to the electromagnetic induction heating power supply, and the electromagnetic induction heating power supply starts working, so that the automatic temperature control of ore pulp is completed. The temperature thermistor is arranged between the electromagnetic induction heating coil and the heat preservation cotton and is connected with an electromagnetic induction heating power supply, when the temperature of the electromagnetic induction heating coil is higher than 180 ℃, the thermistor is conducted, the electromagnetic induction heating power supply stops working, when the temperature of the electromagnetic induction heating coil is lower than 180 ℃, the thermistor is cut off, the electromagnetic induction heating power supply starts working, and therefore protection of the electromagnetic induction heating coil is completed, and stability of equipment is improved. After the ore pulp is heated, the reaction rate of the vulcanizing agent and the oxidized minerals is accelerated, and a stable vulcanized mineral layer is formed on the surface of the oxidized minerals, so that the subsequent flotation process is facilitated.
The automatic control heating vulcanizing system for the lead zinc oxide ores and the automatic control vulcanizing agent heat exchange high-temperature prevention device are composed of a liquid level sensor, an electromagnetic induction heating power supply and an industrial computer. The liquid level sensor is arranged above the electromagnetic induction heating coil, when the liquid level sensor detects that the pulp liquid level is lower than the electromagnetic induction heating coil, detection signals are transmitted to the industrial computer, and the industrial computer gives a stop signal to the electromagnetic induction heating power supply, so that the electromagnetic induction heating power supply stops working. When the liquid level sensor detects that the liquid level of ore pulp is higher than the electromagnetic induction heating coil, a detection signal is transmitted to an industrial computer, the industrial computer gives a starting signal to the electromagnetic induction heating power supply, and the electromagnetic induction heating power supply starts to work, so that decomposition loss caused by high-temperature overheat of the vulcanizing agent at the heat exchange tube is prevented.
The automatic control heating vulcanizing system for the lead zinc oxide ores is characterized in that an automatic control vulcanizing agent adding device in the drawing consists of a vulcanizing agent pipe, a vulcanizing agent electromagnetic valve, a self-suction ore feeding pipe, a pH sensor and an industrial computer. And when the concentration signal of the vulcanizing agent in the ore pulp is higher than a set value in the industrial computer, the industrial computer controls the solenoid valve of the vulcanizing agent to be closed, and the concentration of the vulcanizing agent in the ore pulp in the heating vulcanizing barrel is reduced. When the concentration signal of the vulcanizing agent in the ore pulp is lower than the set value in the industrial computer, the industrial computer controls the solenoid valve of the vulcanizing agent to be opened, and the concentration of the vulcanizing agent in the ore pulp in the heating vulcanizing barrel is increased, so that the automatic control of the vulcanizing agent addition to the ore pulp is completed. The addition amount of the vulcanizing agent is controlled within the range of pH8 to pH14. The accurate addition of the vulcanizing agent reduces the consumption of the vulcanizing agent and reduces the adverse effect of harmful sulfide ions S and sulfide hydrogen ions HS in ore pulp on subsequent flotation.
The automatic control heating vulcanizing system for the lead zinc oxide ores is characterized in that the automatic control heating vulcanizing barrel device for preventing air from entering is composed of a self-suction ore feeding pipe, a self-suction ore feeding pipe suction inlet electromagnetic valve, a liquid level sensor arranged above a pulp mixing barrel self-suction ore feeding pipe suction inlet and an industrial computer. When the liquid level sensor detects that the pulp liquid level of the pulp mixing barrel is higher than the set liquid level, the liquid level sensor transmits a detection signal to an industrial computer, the industrial computer controls the electromagnetic valve at the suction inlet of the self-suction feeding pipe to be opened, pulp and vulcanizing agent are mixed in the self-suction feeding pipe and enter the heating vulcanizing barrel, when the liquid level sensor detects that the pulp liquid level of the pulp mixing barrel is lower than the set liquid level, the liquid level sensor transmits the detection signal to the industrial computer, and the industrial computer controls the electromagnetic valve at the suction inlet of the self-suction feeding pipe to be closed, so that the oxidization loss and heat loss of the vulcanizing agent caused by the fact that air is sucked into the heating vulcanizing barrel after the pulp liquid level of the pulp mixing barrel is lower than the suction inlet of the self-suction feeding pipe are prevented, and therefore the use amount of the vulcanizing agent is reduced, and the heat efficiency is improved.
The beneficial effects of the invention are as follows: the automatic control of the pulp density and the pulp mixing barrel are adopted to complete the density control of the pulp, and the adjustment of the pulp density, namely the adjustment of the liquid-ore ratio, is beneficial to the subsequent heating, vulcanization and flotation; the reaction rate of the vulcanizing agent and the oxidized minerals is accelerated after the electromagnetic induction heating vulcanizing barrel is automatically controlled to heat the ore pulp, and a stable vulcanized mineral layer is formed on the surface of the oxidized minerals, so that the subsequent flotation process is facilitated; the automatic control vulcanizing agent heat exchange prevention device prevents the vulcanizing agent from being decomposed and lost due to high-temperature overheat of the heat exchange tube; the vulcanizing agent is accurately added by the automatic vulcanizing agent adding device, so that the consumption of the vulcanizing agent is reduced, and the adverse effect of harmful sulfide ions S and sulfide ions HS in ore pulp on subsequent flotation is reduced; the automatic control prevents air from entering the heating vulcanizing barrel device, prevents vulcanizing agent oxidation loss and heat loss caused by that the pulp liquid level of the pulp mixing barrel is lower than that of the air sucked into the heating vulcanizing barrel after the air is sucked into the suction inlet of the self-suction ore feeding pipe, reduces the using amount of vulcanizing agent and improves the heat efficiency.
In 2019, 1 month-3 month 20 days, lead-zinc oxide ore heating and vulcanizing treatment industrial tests with lead-zinc oxidation rate of more than 90% are completed in Ganluo Ji-di Ji-lead-zinc mining limited companies of a Hemsy group of light, the consumption of vulcanizing agent is reduced by 20% -30% after heating and vulcanizing the lead oxide ore, the yellow medicinal amount of a collecting agent is reduced by 30% -50%, gangue inhibitors such as sodium silicate and sodium hexametaphosphate are not needed to be added, the floatation process is well controlled, floatation foam does not overflow, high-iron lead oxide can also be floated, and white-color lead oxide becomes lead sulfide color of lead gray after heating and vulcanizing; the zinc oxide ore is heated and vulcanized, the flotation does not need desliming and concentration, the raw ore slurry is directly subjected to flotation, the consumption of vulcanizing agent is reduced by 25% -35%, the consumption of collecting agent yellow is reduced by 15% -30%, the consumption of activating agent copper sulfate is reduced by 20% -30%, gangue inhibitors such as sodium silicate and sodium hexametaphosphate are not needed to be added, the flotation process is easy to control, flotation foam does not overflow, zinc oxide with high iron content can also be subjected to flotation, and white zinc oxide becomes brown yellow or brownish red zinc sulfide after being heated and vulcanized.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a structural diagram of the present invention. In the figure, a size mixing barrel 1, a variable frequency stirring device A, a feeding pipe 3, a clear water electromagnetic valve 4, a clear water pipe 5, a pulp density sensor 6, a liquid level sensor A, a self-suction feeding pipe suction inlet electromagnetic valve 8, a vulcanizing agent pipe 9, a vulcanizing agent electromagnetic valve 10, a self-suction feeding pipe 11, a heating vulcanizing barrel 12, a main impeller 13, a secondary impeller 14, a heat exchange pipe 15, a heat exchange pipe 16, an electromagnetic induction heating coil 17, a temperature thermistor 18, a liquid level sensor B, a temperature sensor 19, a pH sensor 20, a discharging pipe 21, a variable frequency stirring device B22, a 23, an electromagnetic induction heating power supply 24, an industrial computer 25 and thermal insulation cotton.
Detailed Description
[ Example 1]
The automatic control heating vulcanizing system for lead zinc oxide ore in the figure comprises an automatic control pulp density mixing barrel, an automatic control electromagnetic induction heating vulcanizing barrel, a variable frequency stirring device A2, a variable frequency stirring device B22, an automatic control vulcanizing agent heat exchange high temperature prevention device, an automatic control vulcanizing agent adding device, an automatic control air inlet heating vulcanizing barrel prevention device, an electromagnetic induction heating power supply 23 and an industrial computer 24.
[ Example 2]
The automatic pulp density control pulp mixing barrel in the figure consists of a pulp mixing barrel 1, a variable frequency stirring device A2, a mineral feeding pipe 3, a clear water electromagnetic valve 4, a clear water pipe 5, a pulp density sensor 6 and an industrial computer 24. The ball-milled ore pulp is fed into a pulp mixing barrel 1 through an ore feeding pipe 3, the ore pulp is stirred by a variable-frequency stirring device A2 to be in a suspension state, a density signal of the ore pulp measured by an ore pulp density sensor 6 is transmitted to an industrial computer 24, and the industrial computer 24 is used for analysis and treatment. When the density of the ore pulp measured by the ore pulp density sensor 6 is larger than the set value of the industrial computer 24, the industrial computer 24 controls the clear water electromagnetic valve 4 to be opened, clear water in the clear water pipe 5 enters the pulp mixing barrel 1 through the clear water electromagnetic valve 4 and the ore feeding pipe 3 to dilute the ore pulp, and when the density of the ore pulp measured by the ore pulp density sensor 6 is smaller than the set value of the industrial computer 24, the industrial computer 24 controls the clear water electromagnetic valve 4 to be closed, so that the automatic control of the density of the ore pulp is completed, and the density range of the ore pulp controlled by the industrial computer 24 is 1.05-1.15. The adjustment of the pulp density, namely the adjustment of the liquid-ore ratio, is beneficial to the subsequent heating vulcanization and floatation.
[ Example 3]
The automatic control electromagnetic induction heating vulcanizing barrel in the figure comprises a heating vulcanizing barrel 12, a variable frequency stirring device B22, a self-suction ore feeding pipe 11, a main impeller 13, an auxiliary impeller 14, a heat exchange pipe 15, a temperature sensor 19, an electromagnetic induction heating coil 16, an electromagnetic induction heating power supply 23, a temperature thermistor 17, an industrial computer 24, heat preservation cotton 25 and an ore discharging pipe 21. The variable frequency stirring device B22 is started to drive the main impeller 13 and the auxiliary impeller 14 to rotate, the ore pulp which is sucked by the self-suction ore feeding pipe 11, mixed with the sizing agent and added with the vulcanizing agent is pumped into the heat exchange pipe 15 by the main impeller 13 and then returns to the middle upper part of the heating vulcanizing barrel 12, the ore pulp is rotated by the auxiliary impeller 14 to suspend, heated and vulcanized and then is discharged by the ore discharge pipe 21. The heat preservation cotton 25 is wrapped outside the heating vulcanizing barrel 12 and the heat exchange tube 15 and is used for heat preservation and heat loss reduction. The electromagnetic induction heating coil 16 is wound outside the heat exchange tube 15 wrapped with the heat preservation cotton 25 and is connected with the electromagnetic induction heating power supply 23, the working temperature of the heating vulcanizing barrel 12 is controlled by the industrial computer 24 to be 35-95 ℃, when the temperature signal obtained by the temperature sensor 19 is greater than the temperature set by the industrial computer 24, the industrial computer 24 gives a stop signal to the electromagnetic induction heating power supply 23, the electromagnetic induction heating power supply 23 stops working, when the temperature signal obtained by the temperature sensor 19 is less than the temperature set by the industrial computer 24, the industrial computer 24 gives a start signal to the electromagnetic induction heating power supply 23, and the electromagnetic induction heating power supply starts working, so that the automatic temperature control of ore pulp is completed. The temperature thermistor 17 is arranged between the electromagnetic induction heating coil 16 and the heat preservation cotton 25 and is connected with the electromagnetic induction heating power supply 23, when the temperature of the electromagnetic induction heating coil 16 is higher than 180 ℃, the thermistor is conducted, the electromagnetic induction heating power supply 23 stops working, when the temperature of the electromagnetic induction heating coil 16 is lower than 180 ℃, the thermistor is cut off, and the electromagnetic induction heating power supply 23 starts working, so that the electromagnetic induction heating coil 16 is protected, and the stability of equipment is improved. After the ore pulp is heated, the reaction rate of the vulcanizing agent and the oxidized minerals is accelerated, and a stable vulcanized mineral layer is formed on the surface of the oxidized minerals, so that the subsequent flotation process is facilitated.
[ Example 4]
The automatic control vulcanizing agent heat exchange high temperature prevention device in the figure consists of a liquid level sensor B18, an electromagnetic induction heating power supply 23 and an industrial computer 24. The liquid level sensor B18 is arranged above the electromagnetic induction heating coil 16, when the liquid level sensor B18 detects that the pulp liquid level is lower than the electromagnetic induction heating coil 16, a detection signal is transmitted to the industrial computer 24, the industrial computer 24 gives a stop signal to the electromagnetic induction heating power supply 23, and the electromagnetic induction heating power supply 23 stops working. When the liquid level sensor B18 detects that the pulp liquid level is higher than the electromagnetic induction heating coil 16, a detection signal is transmitted to the industrial computer 24, the industrial computer 24 gives a starting signal to the electromagnetic induction heating power supply 23, and the electromagnetic induction heating power supply 23 starts to work, so that decomposition loss caused by high-temperature overheat of the vulcanizing agent in the heat exchange tube 15 is prevented.
[ Example 5]
The automatic control vulcanizing agent adding device in the figure consists of a vulcanizing agent pipe 9, a vulcanizing agent electromagnetic valve 10, a self-suction ore feeding pipe 11, a pH sensor 20 and an industrial computer 24. The sulfidizing agent concentration signal in the ore slurry detected by the pH sensor 20 installed in the heated sulfidizing tank 12 is transmitted to the industrial computer 24, and when the sulfidizing agent concentration signal in the ore slurry is higher than the set value in the industrial computer 24, the industrial computer 24 controls the sulfidizing agent electromagnetic valve 10 to be closed, and the concentration of the ore slurry sulfidizing agent in the heated sulfidizing tank 12 is reduced. When the concentration signal of the vulcanizing agent in the ore pulp is lower than the set value in the industrial computer 24, the industrial computer 24 controls the solenoid valve 10 of the vulcanizing agent to open, and the concentration of the vulcanizing agent in the ore pulp in the heating vulcanizing barrel 12 is increased, so that the automatic control of the vulcanizing agent addition to the ore pulp is completed. The addition amount of the vulcanizing agent is controlled within the range of pH8 to pH14. The accurate addition of the vulcanizing agent reduces the consumption of the vulcanizing agent and reduces the adverse effect of harmful sulfide ions S and sulfide hydrogen ions HS in ore pulp on subsequent flotation.
[ Example 6]
The automatic control device for preventing air from entering the heating vulcanizing barrel in the figure consists of a self-suction ore feeding pipe 11, a self-suction ore feeding pipe suction inlet electromagnetic valve 8, a liquid level sensor A7 arranged above the self-suction ore feeding pipe 11 suction inlet of the size mixing barrel 1 and an industrial computer 24. When the liquid level sensor A7 detects that the pulp liquid level of the pulp mixing barrel 1 is higher than the set liquid level, the liquid level sensor A7 transmits a detection signal to the industrial computer 24, the industrial computer 24 controls the opening of the self-suction feeding pipe suction inlet electromagnetic valve 8, pulp and vulcanizing agent are mixed in the self-suction feeding pipe 11 and enter the heating vulcanizing barrel 12, when the liquid level sensor A7 detects that the pulp liquid level of the pulp mixing barrel 1 is lower than the set liquid level, the liquid level sensor A7 transmits the detection signal to the industrial computer 24, the industrial computer 24 controls the closing of the self-suction feeding pipe suction inlet electromagnetic valve 8, so that the vulcanizing agent oxidation loss and heat loss caused by air sucked into the heating vulcanizing barrel 12 after the pulp liquid level of the pulp mixing barrel 1 is lower than the suction inlet of the self-suction feeding pipe 11 are prevented, and the use amount of the vulcanizing agent is reduced, and the heat efficiency is improved.
Claims (1)
1. An automatic control heating and vulcanizing system for lead zinc oxide ores is characterized in that:
The automatic control device consists of an automatic control pulp density pulp mixing barrel, an automatic control electromagnetic induction heating vulcanizing barrel, an automatic control vulcanizing agent heat exchange high-temperature prevention device, an automatic control vulcanizing agent adding device, an automatic control vulcanizing agent air inlet prevention device, an electromagnetic induction heating power supply and an industrial computer;
the automatic pulp density control pulp mixing barrel consists of a pulp mixing barrel, a variable frequency stirring device A, a mineral feeding pipe, a clear water electromagnetic valve, a clear water pipe and a pulp density sensor, wherein the density range of pulp is controlled by an industrial computer to be 1.05-1.15, and the adjustment of pulp density, namely the adjustment of liquid-mineral ratio, is beneficial to subsequent heating vulcanization and flotation;
the automatic control electromagnetic induction heating vulcanizing barrel consists of a heating vulcanizing barrel, a variable frequency stirring device B, a self-suction ore feeding pipe, a main impeller, an auxiliary impeller, a heat exchange pipe, a temperature sensor, an electromagnetic induction heating coil, an electromagnetic induction heating power supply, a temperature thermistor, heat preservation cotton and an ore discharge pipe, wherein the variable frequency stirring device B is started to drive the main impeller and the auxiliary impeller to rotate, after pulp which is well mixed and added with vulcanizing agent is sucked by the self-suction ore feeding pipe, the pulp is pumped into the heat exchange pipe by the main impeller and returns to the middle upper part of the heating vulcanizing barrel, and the pulp is discharged by the ore discharge pipe after the auxiliary impeller is rotated, suspended and heated and vulcanized;
the heat preservation cotton is wrapped outside the heating vulcanizing barrel and the heat exchange pipe, the electromagnetic induction heating coil is wrapped outside the heat exchange pipe wrapped with the heat preservation cotton and is connected with an electromagnetic induction heating power supply, the working temperature of the heating vulcanizing barrel is controlled to be 35-95 ℃ by an industrial computer, the temperature thermistor is arranged between the electromagnetic induction heating coil and the heat preservation cotton and is connected with the electromagnetic induction heating power supply, and the protection temperature of the temperature thermistor heating coil is 180 ℃;
the automatic vulcanizing agent heat exchange control high-temperature prevention device comprises a liquid level sensor B, wherein the liquid level sensor B is arranged above the electromagnetic induction heating coil, when the liquid level sensor B detects that the pulp liquid level is lower than the electromagnetic induction heating coil, the electromagnetic induction heating power supply stops working, and when the liquid level sensor B detects that the pulp liquid level is higher than the electromagnetic induction heating coil, the electromagnetic induction heating power supply starts working, so that decomposition loss caused by high-temperature overheating of vulcanizing agent in the heat exchange tube is prevented;
The automatic vulcanizing agent adding control device consists of a vulcanizing agent pipe, a vulcanizing agent electromagnetic valve and a pH sensor; the method comprises the steps that a vulcanizing agent concentration signal in ore pulp detected by a pH sensor arranged in a heating vulcanizing barrel is transmitted to an industrial computer, when the vulcanizing agent concentration signal in the ore pulp is higher than a set value in the industrial computer, an electromagnetic valve for controlling the vulcanizing agent by the industrial computer is closed, the concentration of the mineral pulp vulcanizing agent in the heating vulcanizing barrel is reduced, when the vulcanizing agent concentration signal in the ore pulp is lower than the set value in the industrial computer, an electromagnetic valve for controlling the vulcanizing agent by the industrial computer is opened, and the concentration of the mineral pulp vulcanizing agent in the heating vulcanizing barrel is increased, so that the automatic vulcanizing agent addition to the ore pulp is completed, the adding amount of the vulcanizing agent is controlled within a pH8-pH14, and the adverse effect of harmful sulfur ions S and sulfur hydrogen ions HS in the ore pulp on subsequent flotation is reduced by accurate adding of the vulcanizing agent;
The automatic control device for preventing air from entering the heating vulcanizing barrel consists of a self-suction feeding pipe suction inlet electromagnetic valve and a liquid level sensor A, when the liquid level sensor A detects that the pulp liquid level of the pulp mixing barrel is higher than a set liquid level, the industrial computer controls the self-suction feeding pipe suction inlet electromagnetic valve to be opened, and when the liquid level sensor A detects that the pulp liquid level of the pulp mixing barrel is lower than the set liquid level, the industrial computer controls the self-suction feeding pipe suction inlet electromagnetic valve to be closed, thereby preventing vulcanizing agent oxidation loss and heat loss caused by air suction into the heating vulcanizing barrel after the pulp liquid level of the pulp mixing barrel is lower than the self-suction feeding pipe suction inlet.
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| CN101850290A (en) * | 2010-05-26 | 2010-10-06 | 中南大学 | Method for pretreating ore pulp in lead and zinc oxide flotation process |
| CN102824962A (en) * | 2012-09-17 | 2012-12-19 | 株洲市兴民科技有限公司 | Reagent formula used for zinc leaching residue floatation process and application method of reagent formula |
| CN210079807U (en) * | 2019-04-03 | 2020-02-18 | 成都市锐晨科技有限公司 | Automatic control heating and vulcanizing system for lead-zinc oxide ore |
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| CN1084784A (en) * | 1993-10-08 | 1994-04-06 | 北京矿冶研究总院 | Self-suction ore and middling flotation machine |
| CN101816977A (en) * | 2010-05-26 | 2010-09-01 | 中南大学 | Method for regulating pH value of ore pulp in lead-zinc oxide ore flotation process |
| CN101850290A (en) * | 2010-05-26 | 2010-10-06 | 中南大学 | Method for pretreating ore pulp in lead and zinc oxide flotation process |
| CN102824962A (en) * | 2012-09-17 | 2012-12-19 | 株洲市兴民科技有限公司 | Reagent formula used for zinc leaching residue floatation process and application method of reagent formula |
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