CN115369265A - Method for reducing gold-containing index of antimony matte of antimony gold blast furnace - Google Patents
Method for reducing gold-containing index of antimony matte of antimony gold blast furnace Download PDFInfo
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- CN115369265A CN115369265A CN202210841008.5A CN202210841008A CN115369265A CN 115369265 A CN115369265 A CN 115369265A CN 202210841008 A CN202210841008 A CN 202210841008A CN 115369265 A CN115369265 A CN 115369265A
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- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/02—Obtaining antimony
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/02—Obtaining noble metals by dry processes
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- C—CHEMISTRY; METALLURGY
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- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/02—Obtaining noble metals by dry processes
- C22B11/021—Recovery of noble metals from waste materials
- C22B11/023—Recovery of noble metals from waste materials from pyrometallurgical residues, e.g. from ashes, dross, flue dust, mud, skim, slag, sludge
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P10/20—Recycling
Abstract
The invention discloses a method for reducing the gold-containing index of antimony matte of an antimony gold blast furnace, which is characterized in that 3-20 wt% of antimony fine slag (compared with antimony gold concentrate) is additionally added in the raw material preparation step of the antimony gold blast furnace process; in the burdening step, 5-25 wt% (compared with the pelletized spherulites, the briquetted pellets and the antimony gold lump ores) of alkaline residues are additionally added, and 3-20 wt% (compared with the pelletized spherulites and the antimony gold lump ores) of gold-smelting foaming residues are added, so that the gold-containing grade of antimony matte can be greatly reduced. The method has the advantages of simple operation, resource utilization of the intermediate slag, reduction of the gold-containing index of antimony matte and capability of improving the gold recovery rate of the blast furnace process by more than 4.5 percent.
Description
Technical Field
The invention belongs to the field of antimony-gold separation and smelting, and particularly relates to a method for reducing an antimony-gold matte gold-containing index of an antimony-gold blast furnace.
Background
The antimony-gold separation smelting is that the blast furnace volatilizes and smelts antimony-gold raw materials (antimony sulfide gold concentrate, lump ore and the like), and the antimony-gold raw materials are subjected to basic antimony-gold separation. Smelting and volatilizing in a blast furnace to obtain low-gold-bearing antimony oxide, wherein the antimony oxide enters flue gas, is cooled through a fire cabinet and surface cooling, is collected through a cloth bag chamber, and enters a desulfurization system for treatment; the blast furnace hearth is smelted to obtain melt with the precious antimony, the antimony matte and the furnace slag as a whole, the melt enters a front bed through a slag channel (throat opening), layered settlement is carried out successively according to the difference of specific gravity, the specific gravity of the furnace slag is small and is positioned at the upper part of the melt, the antimony matte is arranged at the middle part of the melt, and the precious antimony is arranged at the lower part. Antimony oxide produced by the blast furnace enters a dust blowing furnace process for smelting, and gold is collected and lead is removed; the produced precious antimony is sent to a gold smelting furnace for gold enrichment, and antimony and gold are separated again.
Compared with a single antimony blast furnace, the antimony-gold blast furnace is different in that the gold-containing grade of concentrate is high (generally 40-70 g/t), the content of iron sulfide in the concentrate is high, the yield of antimony matte is high, the cyclic return cannot be realized, and the blast furnace smelting process must be quitted, so that the recovery rate of the gold in the blast furnace process is directly determined by the gold-containing grade of antimony matte. The gold-containing grade of antimony matte of the existing antimony-gold blast furnace is generally about 30g/t, and the antimony matte influences the recovery rate of a blast furnace process by 5.5-7 percent.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a method for reducing the gold-containing index of antimony matte of an antimony gold blast furnace, and the method can reduce the gold-containing index of the antimony matte from about 30g/t to below 3.5g/t and improve the recovery rate of the blast furnace process by more than 4.5 percent by adding a plurality of intermediate slags produced by an antimony metallurgy smeltery at a plurality of stages of the antimony Jin Wuliao blast furnace process.
The purpose of the invention is realized by the following scheme:
the invention relates to a method for reducing antimony matte gold-containing index of an antimony gold blast furnace, which comprises the steps of mixing an antimony gold raw material with refined lime, water and antimony refined slag for granulation, then circularly feeding coke, caustic sludge, gold smelting foam slag, spherulites, antimony gold lump ores, iron ores and limestone into the blast furnace for volatilization smelting to obtain a melt, feeding crude antimony from a front bed as a gold capturing agent, allowing the melt to flow into a front bed from the blast furnace for settlement separation, forming layering of waste slag, antimony matte and precious antimony in a reflecting furnace of the front bed, and discharging gold-containing precious antimony from a furnace outlet of the front bed to achieve gold enrichment; antimony matte and waste slag are discharged from an antimony matte port and a slag discharge port of the front bed respectively;
the antimony refined slag comprises the following main components in percentage by weight: as: 0.5-1.5%, sb:35% -65%, na:1% -20% of water and 5% -30% of water;
the adding amount of the antimony refined slag is 3-20% of the mass of the antimony gold raw material, preferably 8-17%,
the alkaline residue comprises the following main components in percentage by weight: as: 0.5-20%, sb: 10-45%, na:5% -30%;
the adding amount of the alkaline residue is 5 to 25 percent of the total mass of the spherulites and the antimony gold lump ore, preferably 8 to 13 percent,
the gold smelting blister slag comprises the following main components in percentage by weight: au:30 g/t-100 g/t; as:0.2% -2%, sb:25% -45%, na:1% -10%; the addition amount of the gold smelting bubble slag is 3-20% of the total mass of the spherulites and the antimony gold lump ore, and the preferred addition amount is 6-10%.
The preparation method of the invention can reduce the gold-containing grade of antimony matte produced by the blast furnace from about 30g/t to below 3.5g/t by additionally adding a certain proportion of antimony fine slag and caustic sludge and gold smelting blister slag in the step of proportioning in the process of granulating raw materials, and treat intermediate slag to recover antimony and gold metals in the intermediate slag,
preferably, the antimony-gold source material comprises an antimony-gold concentrate.
In a preferred scheme, the addition amount of the refined lime is 6-7% of the weight of the antimony-gold raw material.
In a preferable scheme, the water content mass fraction of the spherulites is 4% -10%, the Au content is 40-70 g/t, and the Sb content mass fraction is 28% -40%.
In the preferred scheme, the antimony fine slag is a slag obtained by crushing, leaching and dearsenifying arsenic alkali slag and performing filter pressing.
Preferably, the blast furnace is circularly fed in the following mode: coke → alkaline residue, gold smelting foam slag → spherulite, antimony gold block → iron ore, limestone → coke, and the time interval of the cyclic feeding is 10-15 min/batch.
The inventors have found that the feeding in the above manner gives the best final results.
Preferably, the height of the charging column of the blast furnace is 400-900mm above the tuyere.
In a preferred scheme, the caustic sludge is scum produced by adding soda ash or caustic soda flakes to remove arsenic in the antimony refining process.
Further preferably, the caustic sludge is the last caustic sludge in an aqueous state in the arsenic removal later stage in the antimony refining process.
Compared with the alkaline residue, the last alkaline residue contains lower arsenic, less arsenic circulates in a smelting system, the cost of removing arsenic again is reduced, and the comprehensive smelting cost is reduced; the antimony content is higher, and the antimony in the antimony can be more effectively recovered.
In a preferable scheme, the granularity of the caustic sludge is 50 mm-200 mm.
The inventors found that controlling the particle size of the caustic sludge within the above range provides the best final reaction effect.
In a preferred scheme, the gold smelting blister slag is precious antimony produced by a blast furnace, and is mixed with soda ash and quartz sand to be smelted and iron removed to produce dross. Such as the scum produced in the iron removal and blowing steps of crude antimony in patent 201810304824.6.
Preferably, the granularity of the gold smelting foam slag is 50 mm-200 mm.
The inventors found that the final reaction effect is optimal by controlling the particle size of the caustic sludge within the above range.
In a preferable scheme, the adding amount of the coke is 28-40% of the mass of the spherical particles.
In a preferable scheme, the adding amount of the iron ore is 15-25% of the mass of the pellets.
In a preferable scheme, the addition amount of the limestone is 2.5-6% of the mass of the spherical particles.
In the preferable scheme, the reaction temperature in the blast furnace is 1000-1300 ℃, and the reaction time is 3-4.5 h.
In the preferable scheme, the temperature of the fore bed is 1150-1250 ℃, and the layering time is 3-10 h.
In the preferable scheme, in the waste residue, the mass ratio is as follows: siO 2 2 ∶FeO∶CaO∶NaO＝30～32∶20～25∶16～18∶8～12。
Advantageous effects
The invention adds a plurality of intermediate slag produced by a centralized antimony-gold smelting plant in the conventional antimony-gold smelting process, and not only controls the gold-containing grade of antimony matte produced by the blast furnace to be reduced to below 3.5g/t from about 30g/t under the condition that the conventional process parameters are not changed greatly, but also processes the intermediate slag and recovers antimony and gold metals in the intermediate slag. The method is simple to operate, recycles the intermediate slag, reduces the gold-containing index of antimony matte, and can improve the gold recovery rate of the blast furnace process by more than 4.5 percent.
The calculation formula of the gold recovery rate is as follows: (the total amount of the gold metal put in-the total amount of the gold metal in the antimony matte-the total amount of the gold metal in the slag) ÷ the total amount of the gold metal put in is multiplied by 100%.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention.
Detailed Description
The following examples are intended to illustrate the invention but not to further limit it. The invention can be implemented in any of the ways described in the summary of the invention.
A method for reducing the gold-containing index of antimony matte of an antimony gold blast furnace comprises the following steps: raw material preparation, proportioning, smelting and settling separation.
1) Preparation of the starting materials
The raw material preparation is to granulate or agglomerate various antimony-gold raw materials (antimony-gold concentrate and antimony concentrate) by adding a certain proportion of refined lime, water and antimony refined slag. The refined lime is mixed with 3-20 wt% of refined antimony slag based on 6-7 wt% of raw material, 11-13 wt% of water content of raw material, 40-70 g/t of gold content of raw material and 28-40 wt% of antimony content.
2) Ingredients
The blast furnace burden is to mix the pellets or prills with a certain proportion of coke, iron ore and limestone for smelting. The attack is that on the basis of the conventional ingredients of a blast furnace (namely the weight of coke: the weight of pellets or briquettes =28% -40%, the weight of iron ore: the weight of pellets or briquettes =15% -25%, and the weight of limestone: the weight of pellets or briquettes =2.5% -6%), 5% -25% of alkaline residue in weight ratio (compared with the pelletized pellets, briquetted briquettes and antimony gold nuggets) is added, and 3% -20% of gold smelting foaming residue in weight ratio (compared with the pelletized pellets, briquetted briquettes and antimony gold nuggets) is added.
3) Melting
The blast furnace smelting is to add the pellets or the spherulites into a blast furnace for smelting according to the sequence of coke → alkaline slag, gold smelting bubble slag → spherulites, antimony gold lump ore → iron ore, limestone → coke, wherein the reaction temperature in the blast furnace is controlled to be 1000-1300 ℃, the reaction time is 3-4.5 hours, the cyclic feeding interval time is 10-15 minutes per batch, and the height of a stock column is 400-900mm above a tuyere.
4) Settling separation
The melt flows into a front bed from a blast furnace, sedimentation separation is carried out, layering of waste residue, antimony matte and precious antimony is formed in a reflecting furnace of the front bed, and gold-containing precious antimony is discharged from a furnace outlet of the front bed to achieve gold enrichment; antimony matte and waste slag are discharged from an antimony matte port and a slag tap of the front bed respectively;
the temperature of the heat-preservation front bed is 1150-1250 ℃, and the layers are separatedThe time is 3 to 10 hours, and SiO in the waste residue is controlled 2 The mass ratio of FeO to CaO to NaO is 30-32: 20-25: 16-18: 8-12.
Wherein, the antimony fine slag is a slag obtained by crushing, leaching and dearsenifying and filter pressing arsenic alkali slag; the alkaline residue is the water-shaped last alkaline residue at the later stage of arsenic removal in the antimony refining process, the granularity of the alkaline residue is 50-200 mm, the gold smelting bubble residue is the noble antimony produced by a blast furnace, the scruff is produced after soda ash and quartz sand are added for smelting and iron removal, and the granularity of the gold smelting bubble residue is 50-200 mm.
Example 1:
adding 8.3 percent by weight of antimony refined slag during the granulation of the antimony gold concentrate, wherein the antimony refined slag comprises the following main components As:0.85%, sb:56.32%, na:5.13 percent and contains 17.80 percent of water. The blast furnace control parameters are as follows: 580 kg of spherulites, 40 kg of antimony gold lump ore, 200 kg of coke, 110 kg of iron ore and 23 kg of limestone, wherein the batch time is 13 min/batch, 15 pieces of crude antimony are added into a front bed, and antimony matte is obtained after 8 hours. 80 kg of caustic sludge per batch (equivalent to the weight ratio of 12.9%) is added, and the main components of the caustic sludge are As:8.00%, sb:20.57%, na:8.99 percent; 40 kg of gold smelting foam slag (equivalent to 6.45 percent by weight) is added in each batch, and the main components of the gold smelting foam slag are as follows: 46.90gt, as:0.52%, sb:41.70%, na:4.27 percent. Smelting 36 batches of materials to obtain 12 dies of antimony matte, sampling 4 dies of antimony matte, wherein the gold-containing grades of the antimony matte are respectively 3.40g/t, 3.00g/t, 3.50g/t and 2.80g/t, and the average grade is 3.18g/t. And 8 hours of data are taken for calculation, and the recovery rate of the gold in the blast furnace process is 98.22%.
Example 2:
adding 16.7 wt% of antimony refined slag during the granulation of the antimony gold concentrate, wherein the antimony refined slag comprises the following main components As:0.85%, sb:56.32%, na:5.13 percent and contains 17.80 percent of water. The blast furnace control parameters are as follows: 580 kg of spherulites, 40 kg of antimony gold lump ore, 200 kg of coke, 110 kg of iron ore and 23 kg of limestone, wherein the batch time is 13 min/batch, 15 pieces of crude antimony are added into a front bed, and antimony matte is obtained after 8 hours. 100 kg/batch of caustic sludge (equivalent to 16.1% by weight) is added, and the main components of the caustic sludge are As:8.00%, sb:20.57%, na:8.99 percent; 50 kg/batch of gold smelting foam slag (equivalent to 8.1 percent by weight) is added, and the main components of the gold smelting foam slag are as follows: 46.90gt, as:0.52%, sb:41.70%, na:4.27 percent. 13 dies of antimony matte are obtained after 36 batches of materials are smelted, 4 samples are taken, the gold-containing grades of the antimony matte are respectively 1.80g/t, 2.00g/t, 2.30g/t and 2.70g/t, and the average grade is 2.20g/t. And 8 hours of data are taken for calculation, and the recovery rate of the gold in the blast furnace process is 98.43 percent.
Example 3:
antimony refined slag with the weight ratio of 8.3% is added during the granulation of the antimony gold concentrate, and the main components of the antimony refined slag are As:1.02%, sb:51.38%, na:4.96 percent and 25.30 percent of water. The blast furnace control parameters are as follows: 580 kg of spherulites, 40 kg of antimony gold lump ore, 200 kg of coke, 110 kg of iron ore and 23 kg of limestone, wherein the batch time is 13 min/batch, 15 pieces of crude antimony are added into a front bed, and antimony matte is obtained after 8 hours. 60 kg of last alkaline residue per batch (equivalent to the weight ratio of 9.7%) is added, and the main components of the last alkaline residue are As:2.30%, sb:38.54%, na:14.10 percent; 40 kg of gold smelting foam slag (equivalent to 6.45 percent by weight) is added in each batch, and the main components of the gold smelting foam slag are as follows: 33.18gt, as:0.65%, sb:44.00%, na:4.62 percent. Smelting 36 batches of materials to obtain 12 dies of antimony matte, sampling 4 dies of antimony matte, wherein the gold-containing grades of the antimony matte are 1.50g/t, 1.60g/t, 2.10g/t and 2.20g/t respectively, and the average grade is 1.85g/t. And 8 hours of data are taken for calculation, and the recovery rate of the gold in the blast furnace process is 98.52 percent.
Comparative example 1:
antimony refined slag with the weight ratio of 16.7% is added during the granulation of the antimony gold concentrate, and the main components of the antimony refined slag are As:1.02%, sb:51.38%, na:4.96 percent and 25.30 percent of water. The blast furnace control parameters are as follows: 580 kg of spherulites, 40 kg of antimony gold lump ore, 200 kg of coke, 110 kg of iron ore and 23 kg of limestone, wherein the batch time is 13 min/batch, 15 pieces of crude antimony are added into a front bed, and antimony matte is obtained after 8 hours. Alkali residue and gold smelting soaking residue are not added. Smelting 36 batches of materials to obtain 12 dies of antimony matte, sampling 4 dies of antimony matte, wherein the gold-containing grades of the antimony matte are respectively 10.80g/t, 12.67g/t, 10.51g/t and 12.20g/t, and the average grade is 11.55g/t. And 8 hours of data are taken for calculation, and the recovery rate of the gold in the blast furnace process is 94.89%.
Comparative example 2:
antimony fine slag is not added during the granulation of the antimony gold concentrate. The blast furnace control parameters are as follows: 580 kg of spherulites, 40 kg of antimony gold lump ore, 200 kg of coke, 110 kg of iron ore and 23 kg of limestone, wherein the batch time is 13 min/batch, 15 pieces of crude antimony are added into a front bed, and antimony matte is obtained after 8 hours. Alkali residue and gold smelting foam residue are not added. 13 dies of antimony matte are obtained after 35 batches of materials are smelted, 4 samples are taken, the gold-containing grades of the antimony matte are respectively 18.00g/t, 21.30g/t, 26.40g/t and 22.65g/t, and the average grade is 22.09g/t. And 8 hours of data are taken for calculation, and the recovery rate of the gold in the blast furnace process is 93.48 percent.
Comparative example 3:
antimony concentrate slag is not matched during the granulation of the antimony gold concentrate, and alkali slag or gold smelting soaking slag and sodium carbonate are not matched in a blast furnace. The blast furnace control parameters are as follows: 580 kg of spherulites, 40 kg of antimony gold lump ore per batch, 200 kg of coke per batch, 110 kg of iron ore per batch, 23 kg of limestone and 25 kg of sodium carbonate per batch, wherein the batch time is 13min per batch, 15 blocks of crude antimony are added into a front bed, and antimony matte is obtained once after 8 hours. Smelting 36 batches of materials to obtain 12 dies of antimony matte, sampling 4 dies of antimony matte, wherein the gold-containing grades of the antimony matte are 20.60g/t, 22.00g/t, 28.50g/t and 26.80g/t respectively, and the average grade is 24.48g/t. And 8 hours of data are taken for calculation, and the recovery rate of the gold in the blast furnace process is 92.27 percent.
Comparative example 4:
antimony concentrate slag is not matched during the granulation of the antimony gold concentrate, and alkaline slag or gold smelting soaking slag and sodium hydroxide are not matched in a blast furnace. The blast furnace control parameters are as follows: 580 kg of spherical particles per batch, 40 kg of antimony gold lump ore per batch, 200 kg of coke per batch, 110 kg of iron ore per batch, 23 kg of limestone per batch and 10 kg of sodium hydroxide per batch, wherein the batch time is 13min per batch, 15 pieces of crude antimony are added into a front bed, and antimony matte is obtained in 8 hours. Smelting 36 batches of materials to obtain 12 dies of antimony matte, sampling 4 dies of antimony matte, wherein the gold-containing grades of the antimony matte are respectively 18.56g/t, 16.58g/t, 15.26g/t and 19.67g/t, and the average grade is 17.52g/t. And 8 hours of data are taken for calculation, and the recovery rate of the gold in the blast furnace process is 94.09 percent.
Comparative example 5
The other conditions were the same as in example 2 except that the caustic sludge was not added, and only 15.65 kg of sodium hydroxide was added. The gold-containing grades of antimony matte are respectively 12.33g/t, 11.67g/t, 11.90g/t and 14.53g/t, and the average grade is 12.61g/t. And 8-hour data are taken for calculation, and the recovery rate of the gold in the blast furnace procedure is 95.46 percent.
Claims (10)
1. A method for reducing the gold-containing index of antimony matte of an antimony gold blast furnace is characterized by comprising the following steps: mixing an antimony-gold raw material with refined lime, water and antimony refined slag to pelletize to obtain spherical particles, then circularly feeding coke, caustic sludge, gold smelting foam slag, the spherical particles, antimony-gold lump ore, iron ore and limestone into a blast furnace to volatilize and smelt to obtain a melt, feeding crude antimony from a front bed as a gold capturing agent, allowing the melt to flow into a front bed from the blast furnace to perform sedimentation separation, forming layering of waste slag, antimony matte and precious antimony in a reflecting furnace of the front bed, and discharging gold-containing precious antimony from a furnace outlet of the front bed to achieve gold enrichment; antimony matte and waste slag are discharged from an antimony matte port and a slag discharge port of the front bed respectively;
the antimony refined slag comprises the following main components in percentage by weight: as:0.5% -1.5%, sb:35% -65%, na: 1-20 percent of water and 5-30 percent of water;
the adding amount of the antimony refined slag is 3 to 20 percent of the mass of the antimony gold raw material,
the alkaline residue comprises the following main components in percentage by weight: as:0.5% -20%, sb:10% -45%, na:5% -30%;
the adding amount of the alkaline residue is 5 to 25 percent of the total mass of the spherulites and the antimony gold lump ores,
the gold smelting foam slag comprises the following main components in percentage by weight: au:30 g/t-100 g/t; as:0.2% -2%, sb:25% -45%, na:1% -10%; the addition amount of the gold smelting bubble slag is 3 to 20 percent of the total mass of the spherulites and the antimony gold lump ores.
2. The method of claim 1, wherein the method comprises the following steps: the antimony-gold raw material comprises antimony-gold concentrate;
the addition amount of the refined lime is 6 to 7 percent of the weight of the antimony-gold raw material;
in the spherulite, the mass fraction of water content is 4-10%, the mass fraction of Au is 40-70 g/t, and the mass fraction of Sb is 28-40%.
3. The method of claim 1, wherein the method comprises the following steps: the antimony refined slag is a slag obtained by crushing, leaching and dearsenifying arsenic alkali slag and performing filter pressing.
4. The method for reducing the gold-containing index of antimony matte of the antimony gold blast furnace according to claim 1, wherein the method comprises the following steps: the circular feeding mode of the blast furnace is as follows: coke → alkaline residue, gold smelting foam slag → spherulite, antimony gold block → iron ore, limestone → coke, the time interval of the circular feeding is 10-15 min/batch;
the height of the charging column of the blast furnace is 400 mm-900 mm above the tuyere.
5. The method for reducing the gold-containing index of antimony matte of the antimony gold blast furnace according to claim 1, wherein the method comprises the following steps: the caustic sludge refers to scum produced by adding soda ash or flake caustic soda to remove arsenic in the antimony refining process; the granularity of the alkaline residue is 50 mm-200 mm.
6. The method for reducing the gold-containing index of antimony matte of the antimony gold blast furnace according to claim 1, wherein the method comprises the following steps: the gold smelting bubble slag is the scruff slag produced by adding soda ash and quartz sand into the noble antimony produced by the blast furnace, smelting and deironing; the granularity of the gold smelting foam slag is 50 mm-200 mm.
7. The method for reducing the gold-containing index of antimony matte of the antimony gold blast furnace according to claim 1, wherein the method comprises the following steps: the adding amount of the coke is 28 to 40 percent of the mass of the spherical particles; the adding amount of the iron ore is 15-25% of the mass of the spherical particles; the addition amount of the limestone is 2.5-6% of the mass of the spherulites.
8. The method of claim 1, wherein the method comprises the following steps: the reaction temperature in the blast furnace is 1000-1300 ℃, and the reaction time is 3-4.5 h.
9. The method for reducing the gold-containing index of antimony matte of the antimony gold blast furnace according to claim 1, wherein the method comprises the following steps: the temperature of the fore-bed is 1150-1250 ℃, and the layering time is 3-10 h.
10. The method of claim 1, wherein the method comprises the following steps: in the waste residue, the mass ratio is as follows: siO 2 2 ∶FeO∶CaO∶NaO＝30～32∶20～25∶16～18∶8～12。
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