CN102319639B - Preparation and addition method and addition device of sulfurous acid in copper and lead-zinc separation process - Google Patents
Preparation and addition method and addition device of sulfurous acid in copper and lead-zinc separation process Download PDFInfo
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Abstract
The invention discloses a method and a device for preparing and adding sulfurous acid in a copper-lead-zinc separation process, wherein the method comprises the steps of preparing a sodium sulfite aqueous solution and dilute sulfuric acid; adding a sodium sulfite aqueous solution and dilute sulfuric acid into a preparation and addition device for natural reaction to generate sulfurous acid; and (4) introducing the sulfur dioxide escaped from the sulfurous acid into the ore pulp directly to improve the effective concentration of the sulfurous acid in the ore pulp. The device comprises a reactor, wherein two adding pipes are arranged at the top of the reactor, a discharge pipe is arranged at the bottom of the reactor, and an exhaust pipe is also arranged at the top of the reactor. The method improves the effective concentration of the sulfurous acid solution by improving the concentration of the sodium sulfite solution and the sulfuric acid solution, and directly adds the sulfur dioxide escaped from the sulfurous acid solution into the flotation pulp, thereby effectively ensuring the concentration of the active ingredients of the sulfurous acid in the pulp and improving the flotation separation index of copper and lead and zinc.
Description
Technical field
The invention belongs to mineral floating separation process technique field, the adding method that relates to additive in a kind of Nonferrous Metals ore deposit copper and the plumbous zinc separating technology, be specifically related to the preparation adding method of sulfurous acid in a kind of copper and the plumbous zinc separating technology, the invention still further relates to the adding set that uses in a kind of this adding method.
Background technology
At present, the sulfurous acid that adopts in Nonferrous Metals ore deposit copper and plumbous zinc separating technology all adopts fires sulfurous acid or preparation sulfurous acid, mainly there is following problem: 1) fire sulfurous acid and affected by material factor, its concentration is lower, and change in concentration is larger, and addition is larger, very large to the detached job concentration affects, be unfavorable for the effective separation of polymetallic ore, cause inferior separating effect, production target is unstable.2) preparation sulfurous acid, sodium sulfite to be mixed with 1.5% solution, diluting concentrated sulfuric acid become 1% dilution heat of sulfuric acid, with two kinds of solution in mass ratio 1 ︰ 1 mix and add, this compound method is so that sodium sulfite and concentrated sulfuric acid complete reaction just, and the sulfur dioxide that produces is just fully soluble in water, can not cause sulfur dioxide to overflow and contaminated environment, but exist equally valid density low, addition is larger, and is large and then be unfavorable for the problem of separating effect to the detached job concentration affects.
Summary of the invention
In order to overcome above-mentioned problems of the prior art, the purpose of this invention is to provide the preparation adding method of sulfurous acid in a kind of copper and the plumbous zinc separating technology, can improve the valid density of sulfurous acid, reduce addition, improve separating effect.
Another object of the present invention provides the adding set that uses in a kind of above-mentioned adding method, can regulate the addition of sulfurous acid.
For achieving the above object, the technical solution adopted in the present invention is, the preparation adding method of sulfurous acid in a kind of copper and the plumbous zinc separating technology, can the Effective Raise ore pulp in the valid density of sulfurous acid, the method is specifically carried out according to the following steps:
Step 1: it is 1.6%～25% sodium sulfite aqueous solution that industrial sodium sulfite is mixed with mass percent;
It is 1%～25% dilute sulfuric acid that industrial diluting concentrated sulfuric acid is become concentration;
Step 2: adopt the preparation adding set, this preparation adding set comprises reactor, and this reactor head is provided with two and adds pipe, and this reactor bottom is provided with discharge pipe, and this reactor head also is provided with blast pipe;
Add pipe with these two and be connected with the dilute sulfuric acid supply arrangement with sodium sulfite aqueous solution supply arrangement phase respectively, connect an acid-proof pipe at blast pipe, the other end of this acid-proof pipe is directly inserted in the ore pulp, also directly insert in the ore pulp other end of discharge pipe;
Step 3: start sodium sulfite solution supply arrangement and sulfuric acid solution supply arrangement, 1～2 ︰ 1 in mass ratio, sodium sulfite aqueous solution and dilute sulfuric acid that step 1 is made into are sent into reactor by two adding pipes respectively, sodium sulfite aqueous solution and dilute sulfuric acid are at the reactor natural reaction, generate sulfurous acid, the sulfurous acid that generates is added in the ore pulp by discharge pipe, sulfurous acid effusion sulfur dioxide gas in the reactor, when the pressure of sulfur dioxide gas in the reactor reaches certain value, this sulfur dioxide gas is discharged from blast pipe, and by acid-proof pipe importing ore pulp, produce reaction with ore pulp.
In the described step 3, control the fluid flow that two fluid flow sums that add pipes equal to flow out in the discharge pipe.
Another technical scheme of the present invention is, the preparation adding set of the sulfurous acid that uses in a kind of said method comprises reactor, and this reactor head is provided with two and adds pipe, this reactor bottom is provided with discharge pipe, and the top of reactor also is provided with blast pipe.
Be provided with flowmeter on two adding pipes.
Be provided with valve on two adding pipes.
Be provided with valve on the discharge pipe.
The present invention prepares adding method by improving concentration of sodium sulfite and sulfuric acid concentration, and then the valid density of raising sulfurous acid, adopt the adding set supporting with it to continue to pass into excessive sulfur dioxide in the ore pulp, further improve the valid density of sulfurous acid in the ore pulp, separating effect can not only be provided, and solve the problem of sulfur dioxide pollution environment.
Description of drawings
Accompanying drawing is the structural representation of adding set of the present invention.
Among the figure, 1. housing, 2. liquid trap, 3. top cover, 4. blast pipe, 5. first adds pipe, and 6. second adds pipe, 7. first flow meter, 8. the second flowmeter, 9. the first valve, 10. the second valve, 11. discharge pipes, 12. the 3rd valves.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
The present invention is directed to and existing fire that sulfurous acid concentration is lower and change in concentration is large and the low problem of preparation sulfurous acid valid density, the preparation adding method of sulfurous acid in a kind of copper and the plumbous zinc separating technology is provided, can improve the valid density of sulfurous acid in the ore pulp, the method is specifically carried out according to the following steps:
Step 1: it is 1.6～25% sodium sulfite aqueous solution that industrial sodium sulfite is mixed with mass percent;
It is 1～25% dilute sulfuric acid that industrial diluting concentrated sulfuric acid is become concentration;
Step 2: get structure and prepare as shown in drawings adding set, this preparation adding set comprises inverted barrel-shaped housing 1, and the bottom of housing 1 is connected with the liquid trap 2 of reverse frustoconic; Liquid trap 2 inside communicate housing 1 and liquid trap 2 anabolic reaction devices with housing 1 inside; Liquid trap 2 is equipped with discharge pipe 11 away from an end of housing 1, is provided with the 3rd valve 12 on the discharge pipe 11; Be provided with first on the top cover 3 at housing 1 top and add pipe the 5, second adding pipe 6 and blast pipe 4; First end, second that adds pipe 5 adds an end of pipe 6 and an end of blast pipe 4 stretches into respectively in the housing 1, and first other end, second that adds pipe 5 adds the other end of pipe 6 and the other end of blast pipe 4 stretches out respectively outside the housing 1; Be provided with the first valve 9 and first flow meter 7 on the first adding pipe 5, first flow meter 7 is between top cover 3 and the first valve 9; Be provided with the second valve 10 and the second flowmeter 8, the second flowmeters 8 on the second adding pipe 6 between top cover 3 and the second valve 10;
Add pipe 5 with first and be connected with the sodium sulfite aqueous solution supply arrangement, add second and manage 6 and be connected with the dilute sulfuric acid supply arrangement; Perhaps, add pipe 5 with first and be connected with the dilute sulfuric acid supply arrangement, add second and manage 6 and be connected with the sodium sulfite aqueous solution supply arrangement; Connect an acid-proof pipe at blast pipe 4, the other end of this acid-proof pipe is directly inserted in the ore pulp, also directly insert in the ore pulp other end of discharge pipe 11;
Step 3: start sodium sulfite solution supply arrangement and sulfuric acid solution supply arrangement, open the first valve 9 and the second valve 10,1～2 ︰ 1 in mass ratio, the dilute sulfuric acid that the sodium sulfite aqueous solution that step 1 is made into and step 1 are made into adds pipes by two respectively and sends in the housing 1, the sodium sulfite aqueous solution and the dilute sulfuric acid that enter in the housing 1 carry out natural reaction in housing 1, generate sulfurous acid, the sulfurous acid that generates flows into liquid trap 2 from housing 1, collect in liquid trap 2 bottoms, open the 3rd valve 12, the sulfurous acid of liquid trap 2 bottoms flows out from discharge pipe 11, flow in the ore pulp, participate in the FLOTATION SEPARATION of copper, lead, zinc polymetal sulphide ore copper and plumbous zinc, fluid flow and the fluid flow sum by second valve 10 of control by the first valve 9 equals fluid flow by the 3rd valve 12.High concentration sulfurous acid effusion sulfur dioxide gas in the liquid trap 2, when the pressure of sulfur dioxide gas in the liquid trap 2 reaches certain value, this sulfur dioxide gas moves to housing 1 top, from blast pipe 4, discharge housing 1, and by in the acid-proof pipe importing ore pulp that is connected with blast pipe 4, produce reaction with ore pulp.In this adding set course of work, can monitor at any time the adding proportion of sodium sulfite and sulfuric acid solution by first flow meter 7 and the second flowmeter 8, and can make adjustment at any time.
Sulfur dioxide gas is passed in the ore pulp, and the steeping in water for reconstitution in sulfur dioxide gas and the ore pulp is given birth to reaction, generates sulfurous acid, and its reaction equation is: SO
2+ H
2O ≒ H
2SO
3The sulfurous acid that generates can the Effective Raise ore pulp in the concentration of sulfurous acid, improved the FLOTATION SEPARATION index of copper and plumbous zinc; Simultaneously, stop the effusion of sulfur dioxide gas, improved the working environment in flotation workshop.
It mainly is by improving the concentration of sodium sulfite solution and sulfuric acid solution that the present invention prepares adding method, then improved the valid density of sulfurous acid solution, and adopt a kind of novel adding set, directly add flotation pulp simultaneously at the sulfurous acid solution that will react generation, the sulfur dioxide that high concentration sulfurous acid is overflowed directly imports copper and flotation separation of lead zinc ore ore pulp by blast pipe 4, effectively guarantee the concentration of sulfurous acid active ingredient in this ore pulp, improved the FLOTATION SEPARATION index of copper and plumbous zinc.
The present invention prepares the valid density that adding method has not only improved sulfurous acid, and can effectively eliminate because the impact that a large amount of adding sulfurous acid produces separating effect; Effectively solved the sulfur dioxide gas of high concentration sulfurous acid effusion to the impact of production environment; The concentration of sulfurous acid can be adjusted as required at any time, and is simple and convenient.
The present invention also provides the sulfurous acid preparation of adopting in a kind of above-mentioned preparation adding method adding set, and this device comprises inverted barrel-shaped housing 1, and the bottom of housing 1 is connected with the liquid trap 2 of reverse frustoconic; Liquid trap 2 inside communicate liquid trap 2 and housing 1 anabolic reaction device with housing 1 inside; Liquid trap 2 is equipped with discharge pipe 11 away from an end of housing 1, is provided with the 3rd valve 12 on the discharge pipe 11; Be provided with first on the top cover 3 at housing 1 top and add pipe the 5, second adding pipe 6 and blast pipe 4; First end, second that adds pipe 5 adds an end of pipe 6 and an end of blast pipe 4 stretches into respectively in the housing 1, and first other end, second that adds pipe 5 adds the other end of pipe 6 and the other end of blast pipe 4 stretches out respectively outside the housing 1; Be provided with the first valve 9 and first flow meter 7 on the first adding pipe 5, first flow meter 7 is between top cover 3 and the first valve 9; Be provided with the second valve 10 and the second flowmeter 8, the second flowmeters 8 on the second adding pipe 6 between top cover 3 and the second valve 10.
It is 1.6% sodium sulfite aqueous solution that industrial sodium sulfite is mixed with mass percent, and it is 1% dilute sulfuric acid that industrial diluting concentrated sulfuric acid is become concentration; Adopt a preparation adding set, this preparation adding set comprises inverted barrel-shaped housing 1, and the bottom of housing 1 is connected with the liquid trap 2 of reverse frustoconic; Liquid trap 2 inside communicate with housing 1 inside; Liquid trap 2 is equipped with discharge pipe 11 away from an end of housing 1, is provided with the 3rd valve 12 on the discharge pipe 11; Be provided with first on the top cover 3 at housing 1 top and add pipe the 5, second adding pipe 6 and blast pipe 4; First end, second that adds pipe 5 adds an end of pipe 6 and an end of blast pipe 4 stretches into respectively in the housing 1, and first other end, second that adds pipe 5 adds the other end of pipe 6 and the other end of blast pipe 4 stretches out respectively outside the housing 1; Be provided with the first valve 9 and first flow meter 7 on the first adding pipe 5, first flow meter 7 is between top cover 3 and the first valve 9; Be provided with the second valve 10 and the second flowmeter 8, the second flowmeters 8 on the second adding pipe 6 between top cover 3 and the second valve 10; Adding pipe with two on this preparation adding set is connected with the dilute sulfuric acid supply arrangement with the sodium sulfite aqueous solution supply arrangement respectively, connect an acid-proof pipe at blast pipe 4, the other end of this acid-proof pipe is directly inserted in the ore pulp, also directly insert in the ore pulp other end of discharge pipe 11; Start sodium sulfite solution supply arrangement and sulfuric acid solution supply arrangement, open the first valve 9 and the second valve 10,1 ︰ 1 in mass ratio, sodium sulfite aqueous solution and dilute sulfuric acid are added pipe injection housing 1 by two respectively, sodium sulfite aqueous solution and dilute sulfuric acid are at housing 1 interior generation natural reaction, generate sulfurous acid solution, this sulfurous acid solution enters liquid trap 2, collect in liquid trap 2 bottoms, open the 3rd valve 12, sulfurous acid directly passes in the ore pulp by discharge pipe 11 and participates in copper and flotation separation of lead zinc ore, and control equals fluid flow by the 3rd valve 12 by the fluid flow of the first valve 9 and fluid flow sum by the second valve 10.High concentration sulfurous acid effusion sulfur dioxide gas in the liquid trap 2, when the pressure of sulfur dioxide gas in the liquid trap 2 reaches certain value, this sulfur dioxide gas moves to housing 1 top, discharge from blast pipe 4, directly import ore pulp by ACID, improved the valid density of sulfurous acid in the ore pulp, the Separation Indexes of ore pulp is: separate to ore deposit copper grade 4.72%, plumbous grade 13.00%, zinc grade 22.58%; Copper concentrate copper copper grade 14.23% after separating, leaded 9.14%, contain zinc 9.03%, copper recovery 77.17%; Lead and zinc bulk concentrate cupric 1.45%; Lead recovery 81.99%, zinc recovery 89.76%.
Reference examples 1
Adopt pyrite to fire sulfurous acid, and adopt existing adding method, this sulfurous acid of firing is added in the ore pulp, FLOTATION SEPARATION copper and plumbous zinc, the Separation Indexes of ore pulp is: separate plumbous grade 12.91%, zinc grade 22.91% to ore deposit copper grade 4.27%; Copper concentrate copper grade 12.23% after separating, leaded 12.67%, contain zinc 17.76%, copper recovery 70.51%; Lead and zinc bulk concentrate cupric 1.67%; Lead recovery 75.83%, zinc recovery 80.91%.
It is 15% sodium sulfite aqueous solution that industrial sodium sulfite is mixed with mass percent, and it is 20% dilute sulfuric acid that industrial diluting concentrated sulfuric acid is become concentration; Adopt a preparation adding set, this preparation adding set comprises inverted barrel-shaped housing 1, and the bottom of housing 1 is connected with the liquid trap 2 of reverse frustoconic; Liquid trap 2 inside communicate with housing 1 inside; Liquid trap 2 is equipped with discharge pipe 11 away from an end of housing 1, is provided with the 3rd valve 12 on the discharge pipe 11; Be provided with first on the top cover 3 at housing 1 top and add pipe the 5, second adding pipe 6 and blast pipe 4; First end, second that adds pipe 5 adds an end of pipe 6 and an end of blast pipe 4 stretches into respectively in the housing 1, and first other end, second that adds pipe 5 adds the other end of pipe 6 and the other end of blast pipe 4 stretches out respectively outside the housing 1; Be provided with the first valve 9 and first flow meter 7 on the first adding pipe 5, first flow meter 7 is between top cover 3 and the first valve 9; Be provided with the second valve 10 and the second flowmeter 8, the second flowmeters 8 on the second adding pipe 6 between top cover 3 and the second valve 10; Adding pipe with two on this preparation adding set is connected with the dilute sulfuric acid supply arrangement with the sodium sulfite aqueous solution supply arrangement respectively, connect an acid-proof pipe at blast pipe 4, the other end of this acid-proof pipe is directly inserted in the ore pulp, also directly insert in the ore pulp other end of discharge pipe 11; Start sodium sulfite solution supply arrangement and sulfuric acid solution supply arrangement, open the first valve 9 and the second valve 10,2 ︰ 1 in mass ratio, sodium sulfite aqueous solution and dilute sulfuric acid are added pipe injection housing 1 by two respectively, sodium sulfite aqueous solution and dilute sulfuric acid are at housing 1 interior generation natural reaction, generate sulfurous acid solution, this sulfurous acid solution enters liquid trap 2, collect in liquid trap 2 bottoms, open the 3rd valve 12, sulfurous acid directly passes in the ore pulp by discharge pipe 11 and participates in copper and flotation separation of lead zinc ore, and control equals fluid flow by the 3rd valve 12 by the fluid flow of the first valve 9 and fluid flow sum by the second valve 10.High concentration sulfurous acid effusion sulfur dioxide gas in the liquid trap 2, when the pressure of sulfur dioxide gas in the liquid trap 2 reaches certain value, this sulfur dioxide gas moves to housing 1 top, discharge from blast pipe 4, directly import ore pulp by ACID, improved the valid density of sulfurous acid in the ore pulp, the Separation Indexes of ore pulp is: separate to ore deposit copper grade 4.73%, plumbous grade 12.94%, zinc grade 21.91%; Copper concentrate copper copper grade 16.12% after separating, leaded 7.63%, contain zinc 7.65%, copper recovery 83.07%; Lead and zinc bulk concentrate cupric 1.06%; Lead recovery 85.62%, zinc recovery 91.48%.
Reference examples 2
Adopt existing sulfurous acid preparation adding method, generate sulfurous acid, and this sulfurous acid is added FLOTATION SEPARATION copper and plumbous zinc in the ore pulp, the Separation Indexes of ore pulp is: separate plumbous grade 12.88%, zinc grade 23.02% to ore deposit copper grade 4.38%; Copper concentrate copper grade 12.81% after separating, leaded 10.84%, contain zinc 14.51%, copper recovery 73.39%; Lead and zinc bulk concentrate cupric 1.56%; Lead recovery 78.88%, zinc recovery 84.18%.
It is 25% sodium sulfite aqueous solution that industrial sodium sulfite is mixed with mass percent, and it is 25% dilute sulfuric acid that industrial diluting concentrated sulfuric acid is become concentration; Adopt a preparation adding set, this preparation adding set comprises inverted barrel-shaped housing 1, and the bottom of housing 1 is connected with the liquid trap 2 of reverse frustoconic; Liquid trap 2 inside communicate with housing 1 inside; Liquid trap 2 is equipped with discharge pipe 11 away from an end of housing 1, is provided with the 3rd valve 12 on the discharge pipe 11; Be provided with first on the top cover 3 at housing 1 top and add pipe the 5, second adding pipe 6 and blast pipe 4; First end, second that adds pipe 5 adds an end of pipe 6 and an end of blast pipe 4 stretches into respectively in the housing 1, and first other end, second that adds pipe 5 adds the other end of pipe 6 and the other end of blast pipe 4 stretches out respectively outside the housing 1; Be provided with the first valve 9 and first flow meter 7 on the first adding pipe 5, first flow meter 7 is between top cover 3 and the first valve 9; Be provided with the second valve 10 and the second flowmeter 8, the second flowmeters 8 on the second adding pipe 6 between top cover 3 and the second valve 10; Adding pipe with two on this preparation adding set is connected with the dilute sulfuric acid supply arrangement with the sodium sulfite aqueous solution supply arrangement respectively, connect an acid-proof pipe at blast pipe 4, the other end of this acid-proof pipe is directly inserted in the ore pulp, also directly insert in the ore pulp other end of discharge pipe 11; Start sodium sulfite solution supply arrangement and sulfuric acid solution supply arrangement, open the first valve 9 and the second valve 10,1.5 ︰ 1 in mass ratio, sodium sulfite aqueous solution and dilute sulfuric acid are added pipe injection housing 1 by two respectively, sodium sulfite aqueous solution and dilute sulfuric acid are at housing 1 interior generation natural reaction, generate sulfurous acid solution, this sulfurous acid solution enters liquid trap 2, collect in liquid trap 2 bottoms, open the 3rd valve 12, sulfurous acid directly passes in the ore pulp by discharge pipe 11 and participates in copper and flotation separation of lead zinc ore, and control equals fluid flow by the 3rd valve 12 by the fluid flow of the first valve 9 and fluid flow sum by the second valve 10.High concentration sulfurous acid effusion sulfur dioxide gas in the liquid trap 2, when the pressure of sulfur dioxide gas in the liquid trap 2 reaches certain value, this sulfur dioxide gas moves to housing 1 top, discharge from blast pipe 4, directly import ore pulp by ACID, improved the valid density of sulfurous acid in the ore pulp, the Separation Indexes of ore pulp is: separate to ore deposit copper grade 4.77%, plumbous grade 12.86%, zinc grade 22.75%; Copper concentrate copper copper grade 15.85% after separating, leaded 8.25%, contain zinc 8.37%, copper recovery 80.98%; Lead and zinc bulk concentrate cupric 1.20%; Lead recovery 84.36%, zinc recovery 91.03%.
It is 1.6% sodium sulfite aqueous solution that industrial sodium sulfite is mixed with mass percent, and it is 25% dilute sulfuric acid that industrial diluting concentrated sulfuric acid is become concentration; Adopt a preparation adding set, this preparation adding set comprises inverted barrel-shaped housing 1, and the bottom of housing 1 is connected with the liquid trap 2 of reverse frustoconic; Liquid trap 2 inside communicate with housing 1 inside; Liquid trap 2 is equipped with discharge pipe 11 away from an end of housing 1, is provided with the 3rd valve 12 on the discharge pipe 11; Be provided with first on the top cover 3 at housing 1 top and add pipe the 5, second adding pipe 6 and blast pipe 4; First end, second that adds pipe 5 adds an end of pipe 6 and an end of blast pipe 4 stretches into respectively in the housing 1, and first other end, second that adds pipe 5 adds the other end of pipe 6 and the other end of blast pipe 4 stretches out respectively outside the housing 1; Be provided with the first valve 9 and first flow meter 7 on the first adding pipe 5, first flow meter 7 is between top cover 3 and the first valve 9; Be provided with the second valve 10 and the second flowmeter 8, the second flowmeters 8 on the second adding pipe 6 between top cover 3 and the second valve 10; Adding pipe with two on this preparation adding set is connected with the dilute sulfuric acid supply arrangement with the sodium sulfite aqueous solution supply arrangement respectively, connect an acid-proof pipe at blast pipe 4, the other end of this acid-proof pipe is directly inserted in the ore pulp, also directly insert in the ore pulp other end of discharge pipe 11; Start sodium sulfite solution supply arrangement and sulfuric acid solution supply arrangement, open the first valve 9 and the second valve 10,1.1 ︰ 1 in mass ratio, sodium sulfite aqueous solution and dilute sulfuric acid are added pipe injection housing 1 by two respectively, sodium sulfite aqueous solution and dilute sulfuric acid are at housing 1 interior generation natural reaction, generate sulfurous acid solution, this sulfurous acid solution enters liquid trap 2, collect in liquid trap 2 bottoms, open the 3rd valve 12, sulfurous acid directly passes in the ore pulp by discharge pipe 11 and participates in copper and flotation separation of lead zinc ore, and control equals fluid flow by the 3rd valve 12 by the fluid flow of the first valve 9 and fluid flow sum by the second valve 10.High concentration sulfurous acid effusion sulfur dioxide gas in the liquid trap 2, when the pressure of sulfur dioxide gas in the liquid trap 2 reached certain value, this sulfur dioxide gas was discharged from blast pipe 4 to the motion of housing 1 top, directly import ore pulp by ACID, improved the valid density of sulfurous acid in the ore pulp.
Embodiment 5
It is 25% sodium sulfite aqueous solution that industrial sodium sulfite is mixed with mass percent, and it is 1% dilute sulfuric acid that industrial diluting concentrated sulfuric acid is become concentration; Adopt a preparation adding set, this preparation adding set comprises inverted barrel-shaped housing 1, and the bottom of housing 1 is connected with the liquid trap 2 of reverse frustoconic; Liquid trap 2 inside communicate with housing 1 inside; Liquid trap 2 is equipped with discharge pipe 11 away from an end of housing 1, is provided with the 3rd valve 12 on the discharge pipe 11; Be provided with first on the top cover 3 at housing 1 top and add pipe the 5, second adding pipe 6 and blast pipe 4; First end, second that adds pipe 5 adds an end of pipe 6 and an end of blast pipe 4 stretches into respectively in the housing 1, and first other end, second that adds pipe 5 adds the other end of pipe 6 and the other end of blast pipe 4 stretches out respectively outside the housing 1; Be provided with the first valve 9 and first flow meter 7 on the first adding pipe 5, first flow meter 7 is between top cover 3 and the first valve 9; Be provided with the second valve 10 and the second flowmeter 8, the second flowmeters 8 on the second adding pipe 6 between top cover 3 and the second valve 10; Adding pipe with two on this preparation adding set is connected with the dilute sulfuric acid supply arrangement with the sodium sulfite aqueous solution supply arrangement respectively, connect an acid-proof pipe at blast pipe 4, the other end of this acid-proof pipe is directly inserted in the ore pulp, also directly insert in the ore pulp other end of discharge pipe 11; Start sodium sulfite solution supply arrangement and sulfuric acid solution supply arrangement, open the first valve 9 and the second valve 10,1.8 ︰ 1 in mass ratio, sodium sulfite aqueous solution and dilute sulfuric acid are added pipe injection housing 1 by two respectively, sodium sulfite aqueous solution and dilute sulfuric acid are at housing 1 interior generation natural reaction, generate sulfurous acid solution, this sulfurous acid solution enters liquid trap 2, collect in liquid trap 2 bottoms, open the 3rd valve 12, sulfurous acid directly passes in the ore pulp by discharge pipe 11 and participates in copper and flotation separation of lead zinc ore, and control equals fluid flow by the 3rd valve 12 by the fluid flow of the first valve 9 and fluid flow sum by the second valve 10.High concentration sulfurous acid effusion sulfur dioxide gas in the liquid trap 2, when the pressure of sulfur dioxide gas in the liquid trap 2 reached certain value, this sulfur dioxide gas was discharged from blast pipe 4 to the motion of housing 1 top, directly import ore pulp by ACID, improved the valid density of sulfurous acid in the ore pulp.
It is 14% sodium sulfite aqueous solution that industrial sodium sulfite is mixed with mass percent, and it is 13% dilute sulfuric acid that industrial diluting concentrated sulfuric acid is become concentration; Adopt a preparation adding set, this preparation adding set comprises inverted barrel-shaped housing 1, and the bottom of housing 1 is connected with the liquid trap 2 of reverse frustoconic; Liquid trap 2 inside communicate with housing 1 inside; Liquid trap 2 is equipped with discharge pipe 11 away from an end of housing 1, is provided with the 3rd valve 12 on the discharge pipe 11; Be provided with first on the top cover 3 at housing 1 top and add pipe the 5, second adding pipe 6 and blast pipe 4; First end, second that adds pipe 5 adds an end of pipe 6 and an end of blast pipe 4 stretches into respectively in the housing 1, and first other end, second that adds pipe 5 adds the other end of pipe 6 and the other end of blast pipe 4 stretches out respectively outside the housing 1; Be provided with the first valve 9 and first flow meter 7 on the first adding pipe 5, first flow meter 7 is between top cover 3 and the first valve 9; Be provided with the second valve 10 and the second flowmeter 8, the second flowmeters 8 on the second adding pipe 6 between top cover 3 and the second valve 10; Adding pipe with two on this preparation adding set is connected with the dilute sulfuric acid supply arrangement with the sodium sulfite aqueous solution supply arrangement respectively, connect an acid-proof pipe at blast pipe 4, the other end of this acid-proof pipe is directly inserted in the ore pulp, also directly insert in the ore pulp other end of discharge pipe 11; Start sodium sulfite solution supply arrangement and sulfuric acid solution supply arrangement, open the first valve 9 and the second valve 10,1.6 ︰ 1 in mass ratio, sodium sulfite aqueous solution and dilute sulfuric acid are added pipe injection housing 1 by two respectively, sodium sulfite aqueous solution and dilute sulfuric acid are at housing 1 interior generation natural reaction, generate sulfurous acid solution, this sulfurous acid solution enters liquid trap 2, collect in liquid trap 2 bottoms, open the 3rd valve 12, sulfurous acid directly passes in the ore pulp by discharge pipe 11 and participates in copper and flotation separation of lead zinc ore, and control equals fluid flow by the 3rd valve 12 by the fluid flow of the first valve 9 and fluid flow sum by the second valve 10.High concentration sulfurous acid effusion sulfur dioxide gas in the liquid trap 2, when the pressure of sulfur dioxide gas in the liquid trap 2 reached certain value, this sulfur dioxide gas was discharged from blast pipe 4 to the motion of housing 1 top, directly import ore pulp by ACID, improved the valid density of sulfurous acid in the ore pulp.
Claims (6)
1. the preparation adding method of sulfurous acid in a copper and the plumbous zinc separating technology, can the Effective Raise ore pulp in the valid density of sulfurous acid, the method is specifically carried out according to the following steps:
Step 1: it is 1.6%～25% sodium sulfite aqueous solution that industrial sodium sulfite is mixed with mass percent;
It is 1%～25% dilute sulfuric acid that industrial diluting concentrated sulfuric acid is become concentration;
Step 2: adopt the preparation adding set, this preparation adding set comprises reactor, and this reactor head is provided with two and adds pipe, and this reactor bottom is provided with discharge pipe (11), and this reactor head also is provided with blast pipe (4);
Adding pipe with these two is connected with the dilute sulfuric acid supply arrangement with sodium sulfite aqueous solution supply arrangement phase respectively, connect an acid-proof pipe at blast pipe (4), the other end of this acid-proof pipe is directly inserted in the ore pulp, also directly insert in the ore pulp other end of discharge pipe (11);
Step 3: start sodium sulfite solution supply arrangement and sulfuric acid solution supply arrangement, 1～2 ︰ 1 in mass ratio, sodium sulfite aqueous solution and dilute sulfuric acid that step 1 is made into are sent into reactor by two adding pipes respectively, sodium sulfite aqueous solution and dilute sulfuric acid are at the reactor natural reaction, generate sulfurous acid, the sulfurous acid that generates is added in the ore pulp by discharge pipe (11), sulfurous acid effusion sulfur dioxide gas in the reactor, when the pressure of sulfur dioxide gas in the reactor reaches certain value, this sulfur dioxide gas is discharged from blast pipe (4), and by acid-proof pipe importing ore pulp, produce reaction with ore pulp.
2. the preparation adding method of sulfurous acid according to claim 1 is characterized in that, in the described step 3, controls two fluid flow sums that add pipe and equals the middle fluid flow that flows out of discharge pipe (11).
3. the preparation adding set of the sulfurous acid that uses in the described method of claim 1, comprise reactor, this reactor head is provided with two and adds pipe, and this reactor bottom is provided with discharge pipe (11), it is characterized in that, the top of described reactor also is provided with blast pipe (4).
4. the preparation adding set of sulfurous acid according to claim 3 is characterized in that, is provided with flowmeter on described two adding pipes.
5. the preparation adding set of sulfurous acid according to claim 3 is characterized in that, is provided with valve on described two adding pipes.
6. the preparation adding set of sulfurous acid according to claim 3 is characterized in that, described discharge pipe is provided with valve on (11).
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| CN103447154B (en) * | 2013-08-23 | 2014-12-17 | 西北矿冶研究院 | Beneficiation method for separating copper from lead and zinc by adopting liquid sulfur dioxide |
| CN113333170B (en) * | 2021-05-13 | 2022-05-03 | 西北矿冶研究院 | Method for improving main grade of zinc concentrate after copper-zinc separation |
| CN114632630A (en) * | 2022-03-07 | 2022-06-17 | 广东省大宝山矿业有限公司 | Method for recovering copper and zinc from zinc-containing copper concentrate |
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| CN1037285A (en) * | 1988-05-07 | 1989-11-22 | 北京矿冶研究总院 | Beneficiation method for separating copper-lead-zinc multi-metal complex ore |
| RU2135298C1 (en) * | 1998-03-06 | 1999-08-27 | Московский государственный институт стали и сплавов (технологический университет) | Copper-zinc concentrate separation process |
| CN101428250A (en) * | 2008-12-08 | 2009-05-13 | 杭州建铜集团有限公司 | Copper-zinc separation beneficiation method |
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| JPS51119615A (en) * | 1975-04-15 | 1976-10-20 | Nippon Mining Co Ltd | A method for separating and recovering copper and lead concentrates fr om a mixed concentrate |
| JPS61204053A (en) * | 1985-03-05 | 1986-09-10 | Dowa Mining Co Ltd | Copper-lead separating floatation method |
| CN202199334U (en) * | 2011-07-29 | 2012-04-25 | 西北矿冶研究院 | High-efficient environmental protection's sodium sulfite and sulphuric acid are thoughtlessly joined in marriage and are added device |
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| CN1037285A (en) * | 1988-05-07 | 1989-11-22 | 北京矿冶研究总院 | Beneficiation method for separating copper-lead-zinc multi-metal complex ore |
| RU2135298C1 (en) * | 1998-03-06 | 1999-08-27 | Московский государственный институт стали и сплавов (технологический университет) | Copper-zinc concentrate separation process |
| CN101428250A (en) * | 2008-12-08 | 2009-05-13 | 杭州建铜集团有限公司 | Copper-zinc separation beneficiation method |
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