High-lead gold-loaded carbon desorption electrolysis gold mud high-efficiency lead removal system

Abstract

The utility model relates to a high-lead gold-loaded carbon desorption electrolysis gold mud high-efficiency deleading system which comprises a trolley furnace and a rotary intermediate frequency furnace connected with the trolley furnace, and a discharging port of the rotary intermediate frequency furnace is sequentially connected with a lifting intermediate frequency furnace, a water-quenching bead splashing barrel, a gold separation kettle, a first-stage separation reaction kettle and a second-stage separation reaction kettle. Medicament adding ports of the gold separation kettle and the first-stage separation reaction kettle are connected with a nitric acid metering tank and a sodium hydroxide metering tank respectively, a liquid discharging port of the second-stage separation reaction kettle is connected to a silver nitrate transfer tank, and a discharging port of the silver nitrate transfer tank is connected to the silver reaction kettle. A medicament adding port of the silver reaction kettle is connected with a hydrochloric acid metering tank, an acetic acid metering tank and a sodium acetate metering tank, and a discharge port of the silver reaction kettle is sequentially connected with a filter tank, a transfer tank, a copper nitrate storage tank and a copper nitrate reaction kettle. According to the system, corollary equipment corresponding to the sponge gold and sponge silver lead removal procedure is additionally arranged in combination with a lead removal method, lead impurities in the sponge gold and the sponge silver can be efficiently removed, and the quality of gold ingot and silver ingot products obtained through smelting can reach the standard.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metallurgical technical field, concretely relates to a kind of high-lead gold-loaded carbon desorption electrolytic gold mud high-efficiency lead removal system. BACKGROUND

[0002] The gold-loaded carbon in the whole slurry cyanidation carbon slurry gold extraction process is electrolyzed by high temperature and high pressure desorption, and electrolytic gold mud with main components of gold (5%), silver (30%), copper (24%), lead (21%), calcium (9%), powdered carbon (1%), slurry and other impurities (10%) is obtained. The methods for extracting gold and silver from cyanidation gold mud mainly include pyrometallurgical process, pyrometallurgical-hydrometallurgical combined process and whole hydrometallurgical process. Among them, the pyrometallurgical-hydrometallurgical combined process has the advantages of short process flow, small pollution and high one-time recovery rate, and is widely used. The process method is as follows: high-temperature smelting is carried out on the electrolytic gold mud, so that the metals are enriched, the impurities enter the slag phase and are removed, and the enrichment produces gold-silver-copper-lead alloy. After water quenching and bead pouring, the alloy is added into a reaction kettle, gold and other metals are separated under the action of nitric acid in this process, gold does not participate in the reaction and exists in the form of solid at the bottom of the reaction kettle, and after drying, the gold ingot can be directly cast. The silver, lead and copper metals are dissolved into the solution, and then the chlorination precipitation-cleaning and neutralization-iron powder replacement process is used to realize the separation of silver and copper and the recovery of silver.

[0003] With the increase of lead content in ore, the content of lead in gold-loaded carbon also increases, causing the gradual increase of lead in electrolytic gold mud. The gold ingot and silver ingot produced by the traditional pyrometallurgical-hydrometallurgical combined process cannot meet the requirements. Combined with the process method, the main reasons are analyzed as follows: part of the lead in high-lead electrolytic gold mud is oxidized to lead dioxide during the pyrometallurgical smelting and water quenching and bead pouring processes. Since lead dioxide is more oxidizing than nitric acid, it does not react with nitric acid during the separation of gold and silver, and finally remains in the form of solid in the sponge gold, resulting in the residual impurities in the gold powder. During the smelting process of gold powder, lead dioxide is combined with gold to form gold-lead alloy, the surface of the cast gold ingot is not smooth, the gold ingot becomes brittle, and there are a large number of pores on the surface of the gold ingot, resulting in the non-compliance of the quality of the gold ingot. In addition, the unoxidized lead still exists in the form of elemental state and forms an alloy with gold, silver and copper. During the nitric acid separation process, lead is dissolved in the solution in the form of Pb(NO3)2. The mixed solution produced by nitric acid separation is added with hydrochloric acid for chlorination precipitation, Ag and Pb are precipitated in the form of AgCl and PbCl2. Since AgCl and PbCl2 can be replaced by elemental iron, Pb will also be replaced and enter the sponge silver during the replacement process. During the casting process, metallic silver and lead are co-melted, the silver ingot obtained has high impurity content, and the quality of the silver ingot does not meet the requirements. 2+ + 2+ INVENTION CONTENTS

[0004] ​​​In order to solve the problems that the traditional fire-wet combined process system cannot effectively remove lead from high-lead gold-loaded carbon desorption electrolytic gold mud, and that a large amount of lead impurities are contained in sponge gold and sponge silver, thereby resulting in the problem of substandard product quality.

[0005] The specific technical scheme is:

[0006] The utility model provides a kind of high-lead gold-loaded carbon desorption electrolytic gold mud high-efficiency lead removal system, to solve the problem that traditional fire-wet combined process system cannot effectively remove lead from high-lead gold-loaded carbon desorption electrolytic gold mud, and that a large amount of lead impurities are contained in sponge gold and sponge silver, thereby resulting in the problem of substandard product quality.

[0007] S1: baking pretreatment: baking high-lead carbon slurry gold extraction electrolytic gold mud, removing water from gold mud, burning to remove carbon powder in gold mud, oxidizing most of base metals in gold mud to convert them into metal oxides for slag removal during later fire initial smelting;

[0008] S2: fire smelting: after mixing gold mud baked in step S1 with borax, sodium carbonate and silica smelting accessories, smelting is carried out in a rotating intermediate frequency furnace. Under the action of slagging agent, base metal oxides in gold mud form slag into slag phase, and gold, silver, copper and lead metals form metal phase. After casting, gold, silver, copper and lead alloy and smelting slag are obtained. Valuable metals can be further recovered after smelting slag is crushed.

[0009] S3: gold, silver, copper and lead alloy splashing: after gold, silver, copper and lead alloy obtained in step S2 is added into water quenching splashing barrel, sheet-shaped alloy is obtained.

[0010] S4: gold, silver, copper and lead alloy separation, specifically including the following steps:

[0011] S401: sheet-shaped alloy obtained in step S3 is transferred into a gold separation kettle, nitric acid and water are added for gold separation operation, and supernatant and sponge gold (containing lead dioxide) are obtained. Supernatant is transferred to a transfer tank for next step processing.

[0012] S402: sponge gold (containing lead dioxide) obtained in step S401 is transferred to a first separation reaction kettle for lead removal treatment, 4% to 5% sodium hydroxide solution is added, and stirring reaction is carried out for 2 to 3 hours. Lead dioxide in sponge gold is completely removed, and lead-free sponge gold and waste liquid are obtained.

[0013] S403: sponge gold obtained in step S402 is transported to a second separation reaction kettle, and residual silver and copper metals in sponge gold are removed at 100 to 200℃, obtaining high-purity sponge gold and mixed solution of silver nitrate, copper nitrate and lead nitrate. After sponge gold is dried and cast into ingot, high-purity gold ingot is obtained.

[0014] S404: The silver nitrate, copper nitrate, lead nitrate mixed solution obtained in step S403 is transferred into a silver reactor, hydrochloric acid is added until Ag + , Pb 2+ is completely precipitated as AgCl, PbCl2, the supernatant is drawn out of the reactor, and the mixed solid is washed with clean water until the washing liquid is neutral;

[0015] S405: 9% to 10% acetic acid solution and 12% to 13% sodium acetate solution are added to the AgCl, PbCl2 mixed solid obtained in step S404, and the reaction is carried out for 2 to 3 hours. The PbCl2 in the AgCl is converted into (CH3COO)2Pb which is easily soluble in water, the doped PbCl2 is removed, the AgCl solid is washed to neutral, and AgCl solid and waste liquid are obtained;

[0016] S406: Clean water is added to the AgCl solid washed to neutral in step S405, 20 kg of hydrochloric acid is added for slurry treatment, iron powder is slowly added according to a silver metal to iron powder mass ratio of 3:1, stirring is observed until there is no white precipitate remaining in the silver powder, 20 kg of hydrochloric acid is further added after stirring for 60 minutes, stirring is continued for 60 minutes after the addition of hydrochloric acid is completed, and then the stirring is stopped, the silver powder is washed to neutral, and then it is baked and smelted and cast to obtain high-purity silver ingots;

[0017] S407: The supernatant drawn out in step S404 and the tail liquid for washing AgCl in step S405 still contain a large amount of copper nitrate ions. After iron powder displacement, elemental sponge copper and waste liquid are obtained, and the waste liquid is sent to the wastewater treatment workshop.

[0018] Further, the baking in step S1 is carried out at a temperature of 600 to 800°C for 8 hours.

[0019] Further, in step S2, the borax, sodium carbonate, and silicon dioxide are added in an amount of 7% to 10%, 2% to 3%, and 4% to 5%, respectively, of the gold mud.

[0020] Further, in step S401, the addition ratio of the flaky alloy to nitric acid is 1:3.0 to 1:3.3.

[0021] Further, in step S404, the addition ratio of silver metal to hydrochloric acid is 1:1.

[0022] The utility model also provides a kind of above high-lead gold-loaded carbon desorption electrolytic gold mud high-efficiency lead removal method used lead removal system, including trolley furnace and the rotating intermediate frequency furnace connected with it, the rotating intermediate frequency furnace discharge port is sequentially connected with lifting intermediate frequency furnace, water quenching splashing barrel, gold separation kettle, first-stage separation reaction kettle and second-stage separation reaction kettle, the reagent adding port of gold separation kettle and first-stage separation reaction kettle is connected with nitric acid measuring jar and sodium hydroxide measuring jar respectively, the liquid discharge port of second-stage separation reaction kettle is connected in silver nitrate transfer tank, the discharge port of silver nitrate transfer tank is connected in silver reaction kettle, the reagent adding port of silver reaction kettle is connected with hydrochloric acid measuring jar, acetic acid measuring jar and sodium acetate measuring jar, the discharge port of silver reaction kettle is sequentially connected with filter tank, transfer tank, copper nitrate storage tank and copper nitrate reaction kettle.

[0023] Further, the slag outlet of the rotating intermediate frequency furnace is connected to the jaw crusher.

[0024] Further, the gold separation kettle is provided with two or more.

[0025] Further, the silver reaction kettle is provided with two or more, and each pair is connected to the same set of filter tank and transfer tank.

[0026] Further, the copper nitrate storage tank is provided with two or more.

[0027] The utility model has the advantages that the utility model increases the corresponding supporting equipment of lead removal process of sponge gold and sponge silver in combination with high-lead gold-loaded carbon desorption electrolytic gold mud high-efficiency lead removal method, adds sodium hydroxide solution to sponge gold containing lead dioxide, makes lead dioxide and NaOH react to generate water-soluble sodium plumbite Na2PbO3, thereby removing the doped lead dioxide in gold powder, adds acetic acid solution and sodium acetate solution to the precipitated AgCl and PbCl2 mixed solid, converts the precipitated PbCl2 into water-soluble (CH3COO)2Pb, thereby removing the doped PbCl2 of AgCl solid, the system can efficiently remove the lead impurities in sponge gold and sponge silver produced in the wet smelting process, so that the gold and silver content of the obtained gold ingot and silver ingot products is greater than 99.9%, thereby ensuring that the wet smelting product quality meets the standard. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a high-lead gold-loaded carbon desorption electrolytic gold mud high-efficiency lead removal method process chart of the utility model;

[0029] Figure 2 is the equipment correlation of a high-lead gold-loaded carbon desorption electrolytic gold mud high-efficiency lead removal system of the utility model Figure One ;

[0030] Figure 3 is the equipment correlation of a high-lead gold-loaded carbon desorption electrolytic gold mud high-efficiency lead removal system of the utility modelFigure Two ;

[0031] In the figure: 1- trolley furnace, 2- rotary medium frequency furnace, 3- jaw crusher, 4- lifting medium frequency furnace, 5- water quenching bead pouring barrel, 6- gold separation kettle, 7- primary separation reactor, 8- nitric acid metering tank, 9- sodium hydroxide metering tank, 10- secondary separation reactor, 11- silver nitrate transfer tank, 12- silver reactor, 13- hydrochloric acid metering tank, 14- acetic acid metering tank, 15- sodium acetate metering tank, 16- filter tank, 17- transfer tank, 18- copper nitrate storage tank, 19- copper nitrate reactor. DETAILED DESCRIPTION

[0032] In order to make the technical problems and technical solutions solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Example 1

[0033] like Figure 1 As shown, this embodiment provides a method for efficiently removing lead from high-lead gold-loaded carbon by desorption electrolysis of gold mud, comprising the following steps:

[0034] S1: Baking pretreatment: Use a trolley furnace to bake the electrolytic gold mud from high-lead carbon slurry at a temperature of 600-800℃ for 8 hours to remove moisture from the mud, burn off the powdered carbon in the mud, and oxidize most of the base metals in the mud to convert them into metal oxides for slag removal during the subsequent primary smelting process;

[0035] S2: Fire smelting: The gold mud baked in step S1 is mixed with borax, sodium carbonate, and silicon dioxide smelting auxiliary materials, and then added into a rotary medium frequency furnace for smelting (the smelting auxiliary materials are added according to 7% to 10% of borax, 2% to 3% of sodium carbonate, and 4% to 5% of silicon dioxide based on the dried gold mud). Under the action of a slag-forming agent, the remaining active base metals in the gold mud are oxidized and enter the slag phase, and the gold, silver, copper, and lead metals enter the metal phase. After ingot casting, a gold, silver, copper, and lead alloy and smelting slag are obtained. The smelting slag can be further recovered after crushing for valuable metal recovery;

[0036] S3: Gold-silver-copper-lead alloy sheeting: The gold-silver-copper-lead alloy obtained in step S2 is added into a water-quenched bead-spraying barrel to obtain sheet alloy;

[0037] S4: Separation of gold, silver, copper and lead alloys, specifically including the following steps:

[0038] S401: The flake alloy obtained in step S3 is transferred to a gold separation kettle, and nitric acid and clean water are added in a ratio of 1:3.0 to 1:3.3 to separate the flake alloy and obtain a supernatant and sponge gold (containing lead dioxide). The supernatant is transferred to a transfer tank for the next step of processing.

[0039] S402: The sponge gold (containing lead dioxide) obtained in step S401 is transferred to a first separation reactor for lead removal treatment, 4-5% sodium hydroxide solution NaOH is added, and stirring reaction is carried out for 2-3 hours. At this time, the lead dioxide PbO2 in the sponge gold is converted into sodium plumbite Na2PbO3 which is easily soluble, the impurity PbO2 is completely removed, and sponge gold with a purity greater than 95% and waste liquid are obtained. The comparison data of sponge gold and gold content before and after the process are shown in Table 1:

[0040] Table 1 Comparison of gold content of sponge gold before and after treatment

[0041]

[0042] S403: The sponge gold obtained in step S402 is transferred to a second separation reactor, and residual silver and copper metals in the sponge gold are removed at 100-200°C to obtain high-purity sponge gold from which silver and copper are removed, and a mixed solution of silver nitrate, nitric acid and lead nitrate. After drying, the sponge gold is cast into ingots to obtain gold ingots with a purity greater than 99.9%;

[0043] S404: The mixed solution of silver nitrate, copper nitrate and lead nitrate obtained in step S403 is transferred to a silver reactor, and hydrochloric acid is added according to the proportion of 1:1 of silver metal to hydrochloric acid until Ag + 、Pb 2+ in the solution is completely precipitated as AgCl and PbCl2, and the supernatant is removed from the reactor. The mixed solid is washed with clean water until the washing liquid is neutral (to remove copper ions and residual nitrate ions).

[0044] S405: 9-10% acetic acid solution and 12-13% sodium acetate solution are added to the AgCl and PbCl2 mixed solid obtained in step S404, and reaction is carried out for 2-3 hours. PbCl2 in AgCl is converted into (CH3COO)2Pb which is easily soluble in water (solubility in water is 550 g / L), and the doped PbCl2 is removed. The AgCl solid is washed to neutral to obtain AgCl solid and waste liquid. The metal content changes of various solutions in the silver separation process are shown in Table 2:

[0045] Table 2 Metal content changes of various solutions in the silver separation process

[0046]

[0047] S406: To the washing of step S405 to neutral AgCl solid, add 20 kg of hydrochloric acid for slurry treatment, slowly add iron powder according to the mass ratio of silver metal and iron powder 3:1, observe the stirring until there is no white precipitate residue in the silver powder, continue to stir for 60 min, then add 20 kg of hydrochloric acid, continue to stir for 60 min after the addition of hydrochloric acid is completed, stop stirring, and then bake and smelt and cast the silver powder to obtain a silver ingot with Ag content greater than 99.9%; the metal content change of the mixed solid in the silver separation process is shown in Table 3:

[0048] Table 3 Metal content change of mixed solid in silver separation process

[0049]

[0050] S407: The supernatant extracted in step S404 and the tail liquid of AgCl washing in step S405 still have a large amount of copper nitrate ions. After iron powder displacement, elemental sponge copper and waste liquid are obtained, and the waste liquid is sent to the wastewater treatment workshop.

[0051] The embodiment adds a lead removal process after nitric acid separation of gold-silver-copper-lead alloy and after silver nitrate chlorination precipitation. After nitric acid separation of gold-silver-copper-lead alloy, by adding sodium hydroxide solution to the sponge gold containing lead dioxide, lead dioxide PbO2 reacts with NaOH to form water-soluble sodium plumbite Na2PbO3, thereby removing the doped lead dioxide PbO2 in the gold powder; after silver nitrate chlorination precipitation, by adding acetic acid solution and sodium acetate solution to the precipitated AgCl, PbCl2 mixed solid, the precipitated PbCl2 is converted into water-soluble (CH3COO)2Pb, thereby removing the doped PbCl2 in the AgCl solid. Through the above combined lead removal process, the impurity lead in the sponge gold and sponge silver produced in the wet metallurgy process is effectively removed, and the gold and silver content of the gold ingot and silver ingot obtained by smelting is greater than 99.9%, and the product quality meets the standard. Therefore, this method can efficiently remove lead metal in high-lead loaded carbon desorption electrolytic gold mud, thereby improving the quality of wet metallurgy products. Example 1

[0052] The embodiment provides a high-lead gold-loaded carbon desorption electrolytic gold mud high-efficiency lead removal system used in the high-lead gold-loaded carbon desorption electrolytic gold mud high-efficiency lead removal method described in embodiment 1, which comprises a trolley furnace 1 and a rotary intermediate frequency furnace 2 connected with the trolley furnace 1, a jaw crusher 3 connected with a slag outlet of the rotary intermediate frequency furnace 2, a lifting intermediate frequency furnace 4, a water quenching bead pouring barrel 5, a gold separating kettle 6, a first-stage separation reaction kettle 7 and a second-stage separation reaction kettle 10 connected with the slag outlet of the rotary intermediate frequency furnace 2 in sequence, a nitric acid metering tank 8 and a sodium hydroxide metering tank 9 connected with reagent adding openings of the gold separating kettle 6 and the first-stage separation reaction kettle 7 respectively, a silver nitrate intermediate tank 11 connected with a liquid outlet of the second-stage separation reaction kettle 10, a silver reaction kettle 12 connected with a discharge opening of the silver nitrate intermediate tank 11, a hydrochloric acid metering tank 13, an acetic acid metering tank 14 and a sodium acetate metering tank 15 connected with a reagent adding opening of the silver reaction kettle 12, and a filter tank 16, an intermediate tank 17, a copper nitrate storage tank 18 and a copper nitrate reaction kettle 19 connected with a discharge opening of the silver reaction kettle 12 in sequence.

[0053] The embodiment adds corresponding supporting equipment for the sponge gold and sponge silver lead removal process according to the lead removal method described in embodiment 1, so as to form a set of pyrometallurgical-hydrometallurgical combined smelting system with lead removal function, and the specific working principle is as follows:

[0054] The high-lead gold-loaded carbon desorption electrolytic gold mud is added into the trolley furnace 1 to remove the moisture in the gold mud, burn the powdered carbon in the gold mud, and oxidize most of the base metal in the gold mud into metal oxides, so as to be removed by slagging in the later pyrometallurgical primary smelting; after baking, the gold mud is transferred into the rotary intermediate frequency furnace 2 for smelting, under the action of the slagging agent, the base metal oxides in the gold mud form slag phase, and the gold, silver, copper and lead metals form metal phase; then the gold, silver, copper and lead alloy and smelting slag are obtained by transferring the gold, silver, copper and lead alloy into the lifting intermediate frequency furnace 4 for ingot casting, and the smelting slag is further recovered after being crushed by the jaw crusher 3.

[0055] The gold, silver, copper and lead alloy is poured into the water quenching bead pouring barrel 5 to obtain sheet-shaped alloy; then the sheet-shaped alloy is transferred into the gold separating kettle 6, nitric acid is added from the nitric acid metering tank 8 to separate sponge gold (containing lead dioxide) and supernatant, and the supernatant is transferred into the silver nitrate intermediate tank 11 for next step processing.

[0056] The sponge gold (containing lead dioxide) is transferred into the first-stage separation reaction kettle 7 for lead removal treatment, at this time, sodium hydroxide solution is added from the sodium hydroxide metering tank 9, after stirring and reacting for a period of time, the lead dioxide PbO2 in the sponge gold is converted into sodium plumbite Na2PbO3 which is easily soluble in water, the doped PbO2 is completely removed, and the sponge gold after lead removal and waste liquid are obtained.

[0057] The lead-removed sponge gold continues to be transferred into the secondary separation reaction kettle 10, and the residual silver and copper metals in the sponge gold are removed at 100-200 DEG C to obtain high-purity sponge gold and a mixed solution of silver nitrate, copper nitrate and lead nitrate, and the sponge gold is dried and then transferred into the lifting intermediate frequency furnace 4 for ingot casting to obtain high-purity gold ingot.

[0058] The mixed solution of silver nitrate, copper nitrate and lead nitrate continues to be transferred into the silver reaction kettle 12, and hydrochloric acid is first added from the hydrochloric acid metering tank 13 to make Ag + , Pb 2+ in the solution completely precipitate as AgCl and PbCl2, and the supernatant is pumped out of the kettle for next step processing, and clean water is added to wash the mixed solid (to remove copper ions and residual nitrate) until the washing liquid is neutral; then acetic acid solution and sodium acetate solution are added from the acetic acid metering tank 14 and the sodium acetate metering tank 15, at this time, the PbCl2 in the AgCl is converted into (CH3COO)2Pb which is easily soluble in water, the doped PbCl2 is removed, the AgCl solid is washed to be neutral, and AgCl solid and waste liquid are obtained.

[0059] Clean water is added to the AgCl solid which is washed to be neutral, and the AgCl solid is slurried by adding hydrochloric acid from the hydrochloric acid metering tank 13, and then iron powder is added to displace the silver powder, and the silver powder is washed to be neutral, and then the silver powder is dried and transferred into the lifting intermediate frequency furnace 4 for ingot casting to obtain high-purity silver ingot.

[0060] The liquid containing copper nitrate ions generated in the silver reaction kettle 12 is filtered through the filter tank 16, enters the transfer tank 17, and is then pumped into the copper nitrate storage tank 18 and the copper nitrate reaction kettle 19, and iron powder is added to the copper nitrate reaction kettle 19 to obtain elemental sponge copper and waste liquid after displacement, and the waste liquid enters the wastewater treatment workshop.

[0061] As shown in Figure 3 , two gold separation kettles 6 are arranged in the lead-removal system, four silver reaction kettles 12 are arranged, two filter tanks 16 and two transfer tanks 17 are arranged, and two copper nitrate storage tanks 18 are arranged. Figure 3 It should be noted that the number of the devices in the lead-removal system is not limited to , and the specific number can be flexibly set according to the actual requirements of gold mud processing capacity and processing efficiency, and the connection relationship of the added devices should follow the working process of the system and is within the protection scope of the present application.

[0062] The present application is described in detail above through specific and preferred embodiments, but those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and any modification, equivalent replacement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A high-lead gold-loaded carbon desorption electrolytic gold mud high-efficiency lead removal system, characterized in that, It includes a trolley furnace (1) and a rotary intermediate frequency furnace (2) connected with the trolley furnace (1), the discharge port of the rotary intermediate frequency furnace (2) is connected with a lifting intermediate frequency furnace (4), a water quenching and splashing barrel (5), a gold separating kettle (6), a first-stage separating reaction kettle (7) and a second-stage separating reaction kettle (10) in sequence, the medicament adding ports of the gold separating kettle (6) and the first-stage separating reaction kettle (7) are connected with a nitric acid metering tank (8) and a sodium hydroxide metering tank (9) respectively, the liquid discharge port of the second-stage separating reaction kettle (10) is connected with a silver nitrate transfer tank (11), the discharge port of the silver nitrate transfer tank (11) is connected with a silver reaction kettle (12), the medicament adding port of the silver reaction kettle (12) is connected with a hydrochloric acid metering tank (13), an acetic acid metering tank (14) and a sodium acetate metering tank (15), and the discharge port of the silver reaction kettle (12) is connected with a filter tank (16), a transfer tank (17), a copper nitrate storage tank (18) and a copper nitrate reaction kettle (19) in sequence.

2. The high-lead gold-loaded carbon desorption electrolytic gold mud high-efficiency lead removal system according to claim 1, characterized in that, The slag discharge port of the rotary intermediate frequency furnace (2) is connected with a jaw crusher (3).

3. The high-lead gold-loaded carbon desorption electrolytic gold mud high-efficiency lead removal system according to claim 1, characterized in that, The gold separating kettle (6) is provided with two or more than two.

4. The high-lead gold-loaded carbon desorption electrolytic gold mud high-efficiency lead removal system according to claim 1, characterized in that, The silver reaction kettle (12) is provided with two or more than two, and two by two is connected with the same set of filter tank (16) and transfer tank (17).

5. The high-lead gold-loaded carbon desorption electrolytic gold mud high-efficiency lead removal system according to claim 1, characterized in that, The copper nitrate storage tank (18) is provided with two or more than two.

Images