CN101348859A - Method for comprehensively recovering gold, iron and sulphur resource from gold-containing sulfurous iron ore - Google Patents
Method for comprehensively recovering gold, iron and sulphur resource from gold-containing sulfurous iron ore Download PDFInfo
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- CN101348859A CN101348859A CNA2008100588291A CN200810058829A CN101348859A CN 101348859 A CN101348859 A CN 101348859A CN A2008100588291 A CNA2008100588291 A CN A2008100588291A CN 200810058829 A CN200810058829 A CN 200810058829A CN 101348859 A CN101348859 A CN 101348859A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 219
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 105
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 239000010931 gold Substances 0.000 title claims abstract description 81
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 75
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000005864 Sulphur Substances 0.000 title claims description 45
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000012141 concentrate Substances 0.000 claims abstract description 47
- 239000011593 sulfur Substances 0.000 claims abstract description 45
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 45
- 239000000203 mixture Substances 0.000 claims abstract description 41
- 239000002893 slag Substances 0.000 claims abstract description 41
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000003546 flue gas Substances 0.000 claims abstract description 36
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 239000000428 dust Substances 0.000 claims abstract description 16
- 238000005516 engineering process Methods 0.000 claims abstract description 15
- 238000000227 grinding Methods 0.000 claims abstract description 15
- 239000008188 pellet Substances 0.000 claims abstract description 13
- 238000000746 purification Methods 0.000 claims abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 34
- 239000011707 mineral Substances 0.000 claims description 34
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims description 27
- 229910052683 pyrite Inorganic materials 0.000 claims description 27
- 239000011028 pyrite Substances 0.000 claims description 27
- 238000005453 pelletization Methods 0.000 claims description 26
- 238000004519 manufacturing process Methods 0.000 claims description 22
- 238000011084 recovery Methods 0.000 claims description 20
- 238000005188 flotation Methods 0.000 claims description 17
- 230000005484 gravity Effects 0.000 claims description 12
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 11
- JOZPJXBPCVYNEH-UHFFFAOYSA-N [Au].[Fe]=S Chemical compound [Au].[Fe]=S JOZPJXBPCVYNEH-UHFFFAOYSA-N 0.000 claims description 10
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims description 10
- 239000012991 xanthate Substances 0.000 claims description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 239000012190 activator Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 7
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical group [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 5
- 239000001110 calcium chloride Substances 0.000 claims description 5
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 5
- 239000001117 sulphuric acid Substances 0.000 claims description 5
- 235000011149 sulphuric acid Nutrition 0.000 claims description 5
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 229910052952 pyrrhotite Inorganic materials 0.000 claims description 2
- 239000003818 cinder Substances 0.000 abstract description 16
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 5
- 238000002386 leaching Methods 0.000 abstract description 3
- 238000006477 desulfuration reaction Methods 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000005660 chlorination reaction Methods 0.000 abstract 1
- 230000023556 desulfurization Effects 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 6
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 238000007885 magnetic separation Methods 0.000 description 4
- 239000012716 precipitator Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 229910004762 CaSiO Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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Abstract
The invention discloses a method for comprehensively recovering gold sulfurous iron resources from gold-bearing sulfurous iron ore, comprising the following steps: middle and low-grade sulfurous iron ore containing micro-gold and enclosed gold is grinded, and gold-bearing high-grade sulfur ore concentrate is obtained after sulfate dipping, mixture, floatation and concentration for a plurality of times; the ore concentrate undergoes high-temperature overoxidation roasting in a fluid-bed furnace to prepare sulfuric acid after flue gas undergoes dust removal and purification, and cinder becomes high-iron low-sulfur gold-bearing slag; the cinder is added with a pellet adhesive and a chlorating agent for grinding, and a pellet is prepared; the pellet is dried and then undergoes high-temperature chlorination-evaporation roasting; the flue gas is roasted and gold concentrate is obtained after dust collection; and the roasted pellet ore is a high-quality iron-making raw material the iron content of which is more than 60 percent and the gold content of which is less than 0.2 grams per ton. The technology highly efficiently recovers a large amount of gold resources which is lost in the sulfurous iron ore due to difficult cyanidation and leaching caused by containing the micro-gold and the enclosed gold through mixture and floatation of gold and sulfur, concentrate for a plurality of times, high-temperature overoxidation roasting deep desulfurization and high-temperature chlorination roasting degolding, obtains high-quality iron pellet ore while obtaining the sulfuric acid, and highly efficiently utilizes iron resources.
Description
Technical field
The invention belongs to the ore dressing metallurgical technology field, relate to a kind of method that contains comprehensive reutilization iron the golden sulfurous iron ore, gold, sulphur resource from cyaniding leaching difficulty.
Background technology
Normal and the sulfurous iron ore symbiosis of gold, when the disseminated grain size of gold superfine, when being wrapped up by sulfurous iron ore, conventional cyaniding is leached because prussiate is difficult to directly contact the goldc grains surface, leaching yield is very low, can not efficient recovery golden resource wherein, so quite a few gold is lost in the sulfurous iron ore, cause a large amount of golden resource losses, so the recycling of sulfurous iron ore parcel gold and micro-gold is that the ore dressing field of metallurgy does not have the basic hot issue that solves always.
Sulfurous iron ore is made up of iron and sulphur, under the prior art economic condition, and just wherein the sulphur that can effectively utilize, and iron wherein becomes the noxious waste pollution environment when utilizing sulphur, so, sulfurous iron ore ranges the sulphur ore resources, and does not belong to iron ore deposit one class.
It is to use to go up century-old mature technology that sulfurous iron ore is fired sulfuric acid, and the burning slag of generation is to contain Fe
2O
3And Fe
3O
4Mixture, Fe
2O
3And Fe
3O
4Be the raw material of ironmaking, yet use the sulfurous iron ore grade low at present, the gangue content height, coarse size, the burning slag ferrous grade of generation is low, and incomplete combustion causes burning slag sulfur-bearing height, and burning slag can not be as iron-smelting raw material.
Known sulfate cinder extracts the iron ore concentrate technology, be that pyrite cinder to routine carries out magnetic separation, gravity treatment, flotation and handles, obtain iron content 55%-60%, sulfur-bearing is less than 0.4% iron ore concentrate, because conventional pyrite cinder iron content has only 35%-55%, sulfur-bearing is at 1%-2%, and washability is poor, and the rate of recovery of iron has only 50%-60%, resource utilization is low, the flow process complexity, the processing cost height, economic benefit and environmental benefit are poor.For auriferous sulfurous iron ore, resulting burning slag is handled through selecting iron, although improved the iron grade to a certain extent, has reduced sulphur content, contains golden problem and does not solve, and gold still is not utilized effectively.
Known pyrite cinder system iron oxide red, the coagulating agent etc. of utilizing can only utilize a spot of pyrite cinder, and pyrite cinder system cement technology is far from bringing into play the benefit of a large amount of iron resourcess in the sulfurous iron ore.For containing the high burning slag of gold, such purposes has caused the waste of golden resource.
Application number is " producing the method and the device thereof of iron ore concentrate with sulfurous iron ore " of 200610037078.6, be to return the raw material mixing system through the burning slag that fluidizing furnace is discharged, mix with the sulfurous iron ore raw material, make high-grade sulfurous iron ore sulfur-bearing grade be reduced to 35%-41%, burn burning slag iron grade reach more than 63%, thereby slag is used as iron ore concentrate.If but the sulfur-bearing grade of sulfurous iron ore raw material own is just low, and it is high to contain gold, and the burning slag iron content of gained is also low, can not be as iron ore concentrate, and gold is lost in and burns in the slag simultaneously.
Application number is the comprehensive utilization recovery method of 200510021005.3 pyrite cinder, application number is the comprehensive recovering process of 200710050103.9 pyrite cinder, be pyrite cinder to be carried out three stages of magnetic separation obtain iron ore concentrate, remove wherein non-ferrous metal by chloridizing volatilization again, thereby obtain qualified pellet and metallized pellet.Because the ore dressing difficulty of sulfate cinder, the rate of recovery of iron is low, and the iron resources waste is big, simultaneously in the magnetic separation process because copper, lead, zinc, gold etc. do not have magnetic, also with partial loss in mine tailing, cause the loss of non-ferrous metal and precious metal.
Inventor's application and the power of patenting, the patent No. be ZL200410079527.4's " production method of cinder of sulfur iron ore in high iron and low sulfur type ", do not relate to and contain golden sulfurous iron ore raw material, do not reclaim the means of gold in the technology, so, adopt this method can not comprehensively reclaim precious metal for containing golden sulfurous iron ore concentrate.
Application number is a kind of method of burning slag pelletizing enrichment gold and coproduction of iron powder with rotary hearth furnace rapid reduction of carbonaceous auriferous pyrite of 200710065934.3, burn slag through broken mill, a certain proportion of carbonaceous reducing agent of adding and additive and burning slag mix grinding, become pelletizing with ball egg shaping mechanism, at 200～500 ℃ of drying 4～6h, adopt rotary hearth furnace to carry out fast restore, temperature is controlled at 1000～1250 ℃, time 20～45min.After the reducing roasting, carry out slightly breaking, carry out wet ball grinding then, ball milling time 1～3h behind the ball milling, carries out gravity treatment, and the material magnetic separation that gravity treatment obtains sorts, and just obtains high-grade iron powder.This method still is difficult to efficient recovery to micro-gold and sulfurous iron ore parcel gold.
Based on above technology status, at present a large amount of leach the gold that difficulty is lost in the sulfurous iron ore because of cyaniding and well do not recycled, if can adopt a kind of advanced person's technology and method, wherein gold, iron, sulphur are recycled efficiently, will be produced good economic benefit and environmental benefit.
Summary of the invention
Purpose of the present invention is exactly to leach difficulty because of cyaniding and make the golden ferro-sulphur ore that contains that gold is difficult to utilize at a large amount of, provides a kind of and in the element sulphur, fully recycle the method for gold and iron resources in utilizing sulfurous iron ore.
The present invention is achieved through the following technical solutions:
1, contain the production of golden higher-grade sulphur concentrate:
Sulphur quality percentage composition is 5%～38%, gold content is 0.2～6g/t, the golden sulfurous iron ore ore that contains of difficulty is leached in cyaniding, make fineness be less than the weight percentage 50% to 95% of 0.074mm grade through ore grinding, the liberation degree of minerals of gold mineral and sulfurous iron ore combination and gangue mineral is greater than 95%.Adding 500 gram/tons～5000 gram/ton sulfuric acid is activator, adds xanthate 150 gram/tons～800 gram/tons as flotation collector, adds pore forming material 10 gram/tons～100 gram/tons and carries out golden sulphur bulk flotation and obtain golden sulfide mixed concentrate.Golden sulfide mixed concentrate is carried out two to five selected acquisition Containing Sulfur mineral adds up to mass percent greater than 92% the golden higher-grade sulphur concentrate that contains.
2, the high ferro low sulfur type contains golden slag roasting production:
The Containing Sulfur mineral that a last workshop section is obtained add up to mass percent greater than 92% contain the raw material of golden higher-grade sulphur concentrate as fluidized bed furnace for pyrite-based sulphuric acid, in fluidizing furnace, carry out fluidized bed roasting, coefficient of excess air is controlled at 1.05-1.25, maturing temperature is controlled at 900 ℃-1000 ℃, 8 tons-16 tons/square metre days of intensity of roasting, 850 ℃-950 ℃ of baking flue gas temperature, this flue gas is through the gravity settling of pyrite-based sulfuric acid production flue gas, cyclone dust removal, behind the electric precipitation, dustiness is less than 0.2 gram/cubic meter, flue-gas temperature is reduced to 400 ℃-450 ℃, enter the cooling of pyrite-based sulfuric acid production, purification system, flue gas after being purified is through double conversion and double absorption technology system sulfuric acid.Slag mixing in fluidizing furnace, gravity settling chamber, tornado dust collector, the electric precipitator obtains sulfur-bearing quality percentage composition less than 0.4%, contains the weight of iron percentage composition greater than 63%, contains golden high ferro low sulfur type greater than 1g/t and contains gold burning slag.
3, iron ball nodulizing chloridizing volatilization degold:
More than the high ferro low sulfur type that obtains of a workshop section contain gold to burn slag be raw material, the pelletizing caking agent that adds quality percentage composition 0.5%～1.5%, the calcium chloride, the sodium chloride chlorizating agent that add quality percentage composition 3%～10%, make pelletizing after in grinding machine, moistening mill, pelletizing is carried out drying, dry pelletizing obtained to contain the weight of iron percentage composition greater than 60% at 1000 ℃～1300 ℃ roasting temperature in 60 minutes～120 minutes, contained the pellet of golden 0.2g/t, flue gas through gather dust gold ore.
Described sulfurous iron ore comprises pyrite, pyrrhotite.Described sulfuric acid activator level is 500 gram/tons～5000 gram/tons, and xanthate flotation collector agent consumption is 150 gram/tons～800 gram/ton conducts, and the pore forming material consumption is 10 gram/tons～100 gram/tons.
The described weight percentage that makes fineness be less than the 0.074mm grade through ore grinding is 50% to 95%.
Described when carrying out fluidized bed roasting in fluidizing furnace, coefficient of excess air is controlled at 1.05-1.25, and maturing temperature is controlled at 900 ℃-1000 ℃, 8 tons-16 tons/square metre days of intensity of roasting, 850 ℃-950 ℃ of baking flue gas temperature.
Dustiness is less than 0.2 gram/cubic meter behind the described flue gas ash removal, and flue-gas temperature is reduced to 400 ℃-450 ℃.
The quality percentage composition 0.5%～1.5% of described adding pelletizing caking agent, the quality percentage composition 3%～10% of adding chlorizating agent.It is described that pelletizing is carried out drying is 1000 ℃～1300 ℃ roasting temperature 60 minutes～120 minutes.
Described chlorizating agent is calcium chloride or sodium chloride.
Know-why of the present invention:
1, contains the know-why that golden higher-grade sulphur concentrate is produced
Monomer dissociation between gold-containing sulfurating mineral combination and the gangue mineral is the prerequisite that obtains higher-grade sulphur concentrate.Sulfuric acid is activator for sulfurous iron ore, mainly is the oxide film on dissolve sulfur iron ore surface, recovers the surperficial flotability of sulfurous iron ore.The principles of chemistry of xanthate floatation pyrite and gold mineral are as follows:
2ROCSS
-+1/2O
2+H
2O＝ROCSS-SSCOR+2OH
-
The absorption of xanthate on the sulfurous iron ore surface mainly is double xanthate absorption, xanthogenate absorption is also arranged on the gold mineral surface, thereby cause golden sulfur mineral surface hydrophobicity and common flotation.
2, the high ferro low sulfur type contains the know-why that gold burns slag production
During the peroxide roasting, obtain 900 ℃-1000 ℃ high temperature with containing golden higher-grade sulfurous iron ore concentrate in fluidizing furnace, also just remove sulphur preferably, the chemical reaction of generation is as follows:
2FeS
2＝2FeS+S
2
3FeS+5O
2＝Fe
3O
4+3SO
2
4FeS+7O
2＝2Fe
2O
3+4SO
2
S
2+2O
2＝2SO
2
3, the know-why of pellet volatilization degold
The high ferro low sulfur type contains the high-temperature roasting in the presence of chlorizating agent of golden sulfate cinder, and chlorizating agent and golden hair are given birth to following chemical reaction:
2CaCl
2+2SO
2+O
2＝2CaSO
4+2Cl
2
4NaCl+2SO
2+O
2＝2Na
2SO
4+2Cl
2
2CaCl
2+2SiO
2+O
2＝2CaSiO
3+2Cl
2
4NaCl+2SiO
2+O
2＝2Na
2SiO
3+2Cl
2
CaCl
2+SiO
2+H
2O＝CaSiO
3+2HCl
2Au+3Cl
2＝2AuCl
3
The present invention has the following advantages and positively effect:
1, adopts golden sulphur bulk flotation, gold mineral and sulfurous iron ore are enriched in the golden sulfide mixed concentrate simultaneously, improve the rate of recovery of gold and the rate of recovery of sulfurous iron ore as far as possible.Adopt repeatedly selectedly, improve sulfur-bearing and ferrous grade in the concentrate, discharge the gangue mineral in the collective concentrate as far as possible, the sulfate cinder ferrous grade of guaranteeing next step saves slag roasting beneficiating process greater than 63%.
2, contain golden sulphur concentrate under the prerequisite of removing gangue mineral as far as possible, softening temperature raises, and guarantees fluidized bed roasting non-clotted slag at high temperature, thereby realizes the roasting of high temperature peroxide, and the target of deep desulfuration makes and burns the slag sulfur-bearing less than 0.4%.
3, burn the slag sulfur-bearing when low, the reaction of chlorizating agent and sulfurous gas is restricted, and can avoid the low-temperature decomposition of chlorizating agent like this and cause the chlorizating agent consumption to rise, thus the consumption of reduction chlorizating agent.
4, burn slag through high-temperature roasting, washability descends, thereby the ore dressing difficulty is big, and iron recovery is low, and gold also will be lost in the tailings.The flotation simultaneously of gold mineral and sulfurous iron ore is easy, and by bulk flotation, repeatedly depth cleaning directly reaches more than 63% the burning cinder grade, burns slag and no longer passes through ore dressing, has both simplified flow process, and the rate of recovery of iron, sulphur, gold is improved greatly, and resource is efficiently utilized.
5, iron ore concentrate is fired the natural operation that pelletizing is ironmaking, adds chlorizating agent in this nature operation gold is volatilized, and the technology that reclaims gold obtains simplifying, and the rate of recovery of gold is also guaranteed.
The drawing explanation
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Embodiment 1 gold content 0.2～1g/t, the ferro-sulphur ore comprehensive utilization embodiment of sulphur quality percentage composition 5%～10%.
1, contain the production of golden higher-grade sulphur concentrate:
Sulphur quality percentage composition is 5%～10%, gold content is 0.2～1g/t, the golden sulfurous iron ore ore that contains of difficulty is leached in cyaniding, make fineness be less than the weight percentage 50% to 95% of 0.074mm grade through ore grinding, the liberation degree of minerals of gold mineral and sulfurous iron ore combination and gangue mineral is greater than 95%.Adding 500 gram/tons～1500 gram/ton sulfuric acid is activator, adds xanthate 150 gram/tons～300 gram/tons as flotation collector, adds pore forming material 50 gram/tons～100 gram/tons and carries out golden sulphur bulk flotation and obtain golden sulfide mixed concentrate.Golden sulfide mixed concentrate is carried out four to five selected acquisition Containing Sulfur mineral adds up to mass percent greater than 92% the golden higher-grade sulphur concentrate that contains.
2, the high ferro low sulfur type contains golden slag roasting production:
The Containing Sulfur mineral that a last workshop section is obtained add up to mass percent greater than 92% contain the raw material of golden higher-grade sulphur concentrate as fluidized bed furnace for pyrite-based sulphuric acid, in fluidizing furnace, carry out fluidized bed roasting, coefficient of excess air is controlled at 1.05-1.10, maturing temperature is controlled at 900 ℃-950 ℃, 8 tons-10 tons/square metre days of intensity of roasting, 850 ℃-950 ℃ of baking flue gas temperature, this flue gas is through the gravity settling of pyrite-based sulfuric acid production flue gas, cyclone dust removal, behind the electric precipitation, dustiness is less than 0.2 gram/cubic meter, flue-gas temperature is reduced to 400 ℃-450 ℃, enter the cooling of pyrite-based sulfuric acid production, purification system, flue gas after being purified is through double conversion and double absorption technology system sulfuric acid.Slag mixing in fluidizing furnace, gravity settling chamber, tornado dust collector, the electric precipitator obtains sulfur-bearing quality percentage composition less than 0.4%, contains the weight of iron percentage composition greater than 63%, contains golden high ferro low sulfur type greater than 1g/t and contains gold burning slag.
3, iron ball nodulizing chloridizing volatilization degold:
More than the high ferro low sulfur type that obtains of a workshop section contain gold to burn slag be raw material, the pelletizing caking agent that adds quality percentage composition 0.5%～1.0%, the calcium chloride that adds quality percentage composition 3%～5%, make pelletizing after in grinding machine, moistening mill, pelletizing is carried out drying, dry pelletizing obtained to contain the weight of iron percentage composition greater than 60% at 1000 ℃～1150 ℃ roasting temperature in 90 minutes～120 minutes, contained the pellet of golden 0.2g/t, flue gas through gather dust gold ore.
The technical indicator of iron ore concentrate: Fe 〉=60%; Au≤0.2g/t; S≤0.1%.
The technical indicator of gold ore: Au 〉=20g/t.
Embodiment 2: sulphur quality percentage composition is 10%～30%, and containing golden amount percentage composition is the comprehensive utilization of resources embodiment that contains golden sulfurous iron ore of 1～3g/t.
1, contain the production of golden higher-grade sulphur concentrate:
Sulphur quality percentage composition is 10%～30%, gold content is 1～3g/t, the golden sulfurous iron ore ore that contains of difficulty is leached in cyaniding, make fineness be less than the weight percentage 50% to 95% of 0.074mm grade through ore grinding, the liberation degree of minerals of gold mineral and sulfurous iron ore combination and gangue mineral is greater than 95%.Adding 1500 gram/tons～3000 gram/ton sulfuric acid is activator, adds xanthate 300 gram/tons～600 gram/tons as flotation collector, adds pore forming material 30 gram/tons～50 gram/tons and carries out golden sulphur bulk flotation and obtain golden sulfide mixed concentrate.Golden sulfide mixed concentrate is carried out three to four selected acquisition Containing Sulfur mineral adds up to mass percent greater than 92% the golden higher-grade sulphur concentrate that contains.
2, the high ferro low sulfur type contains golden slag roasting production:
The Containing Sulfur mineral that a last workshop section is obtained add up to mass percent greater than 92% contain the raw material of golden higher-grade sulphur concentrate as fluidized bed furnace for pyrite-based sulphuric acid, in fluidizing furnace, carry out fluidized bed roasting, coefficient of excess air is controlled at 1.10-1.20, maturing temperature is controlled at 950 ℃-1000 ℃, 10 tons-14 tons/square metre days of intensity of roasting, 850 ℃-950 ℃ of baking flue gas temperature, this flue gas is through the gravity settling of pyrite-based sulfuric acid production flue gas, cyclone dust removal, behind the electric precipitation, dustiness is less than 0.2 gram/cubic meter, flue-gas temperature is reduced to 400 ℃-450 ℃, enter the cooling of pyrite-based sulfuric acid production, purification system, flue gas after being purified is through double conversion and double absorption technology system sulfuric acid.Slag mixing in fluidizing furnace, gravity settling chamber, tornado dust collector, the electric precipitator obtains sulfur-bearing quality percentage composition less than 0.4%, contains the weight of iron percentage composition greater than 63%, contains golden high ferro low sulfur type greater than 2g/t and contains gold burning slag.
3, iron ball nodulizing chloridizing volatilization degold:
More than the high ferro low sulfur type that obtains of a workshop section contain gold to burn slag be raw material, the pelletizing caking agent that adds quality percentage composition 0.8%～1.5%, the sodium chloride that adds quality percentage composition 8%～10%, make pelletizing after in grinding machine, moistening mill, pelletizing is carried out drying, dry pelletizing obtained to contain the weight of iron percentage composition greater than 60% at 1100 ℃～1250 ℃ roasting temperature in 80 minutes～100 minutes, contained the pellet of golden 0.2g/t, flue gas through gather dust gold ore.
The technical indicator of iron ore concentrate: Fe 〉=60%; Au≤0.2g/t; S≤0.1%.
The technical indicator of gold ore: Au 〉=40g/t.
Embodiment 3: sulphur quality percentage composition is 30%～38%, contains the comprehensive utilization of resources embodiment that contains golden sulfurous iron ore of gold 2～6g/t.
1, contain the production of golden higher-grade sulphur concentrate:
Sulphur quality percentage composition is 30%～38%, gold content is 2～6g/t, the golden sulfurous iron ore ore that contains of difficulty is leached in cyaniding, make fineness be less than the weight percentage 50% to 95% of 0.074mm grade through ore grinding, the liberation degree of minerals of gold mineral and sulfurous iron ore combination and gangue mineral is greater than 95%.Adding 2500 gram/tons～5000 gram/ton sulfuric acid is activator, adds xanthate 500 gram/tons～800 gram/tons as flotation collector, adds pore forming material 10 gram/tons～40 gram/tons and carries out golden sulphur bulk flotation and obtain golden sulfide mixed concentrate.Golden sulfide mixed concentrate is carried out two to be obtained the Containing Sulfur mineral to triple cleaning and adds up to mass percent greater than 92% the golden higher-grade sulphur concentrate that contains.
2, the high ferro low sulfur type contains golden slag roasting production:
The Containing Sulfur mineral that a last workshop section is obtained add up to mass percent greater than 92% contain the raw material of golden higher-grade sulphur concentrate as fluidized bed furnace for pyrite-based sulphuric acid, in fluidizing furnace, carry out fluidized bed roasting, coefficient of excess air is controlled at 1.20-1.25, maturing temperature is controlled at 950 ℃-1000 ℃, 10 tons-16 tons/square metre days of intensity of roasting, 850 ℃-950 ℃ of baking flue gas temperature, this flue gas is through the gravity settling of pyrite-based sulfuric acid production flue gas, cyclone dust removal, behind the electric precipitation, dustiness is less than 0.2 gram/cubic meter, flue-gas temperature is reduced to 400 ℃-450 ℃, enter the cooling of pyrite-based sulfuric acid production, purification system, flue gas after being purified is through double conversion and double absorption technology system sulfuric acid.Slag mixing in fluidizing furnace, gravity settling chamber, tornado dust collector, the electric precipitator obtains sulfur-bearing quality percentage composition less than 0.4%, contains the weight of iron percentage composition greater than 63%, contains golden high ferro low sulfur type greater than 3g/t and contains gold burning slag.
3, iron ball nodulizing chloridizing volatilization degold:
More than the high ferro low sulfur type that obtains of a workshop section contain gold to burn slag be raw material, the pelletizing caking agent that adds quality percentage composition 1%～1.5%, the calcium chloride that adds quality percentage composition 5%～8%, make pelletizing after in grinding machine, moistening mill, pelletizing is carried out drying, dry pelletizing obtained to contain the weight of iron percentage composition greater than 60% at 1150 ℃～1300 ℃ roasting temperature in 60 minutes～90 minutes, contained the pellet of golden 0.2g/t, flue gas through gather dust gold ore.
The technical indicator of iron ore concentrate: Fe 〉=60%; Au≤0.2g/t; S≤0.1%.
The technical indicator of gold ore: Au 〉=60g/t.
Claims (9)
1, a kind of from contain golden sulfurous iron ore the method for comprehensive recovery of gold iron sulphur resource, finish according to the following steps:
(1) contain the production of golden higher-grade sulphur concentrate:
Sulphur quality percentage composition is 5%～38%, gold content is 0.2～6g/t, the golden sulfurous iron ore ore that contains of difficulty is leached in cyaniding, make fineness reach the liberation degree of minerals of gold mineral and sulfurous iron ore combination and gangue mineral through ore grinding greater than 95%, adding sulfuric acid is activator, add xanthate as flotation collector, add pore forming material and carry out golden sulphur bulk flotation and obtain golden sulfide mixed concentrate, golden sulfide mixed concentrate is carried out two to five selected acquisition Containing Sulfur mineral add up to mass percent greater than 92% the golden higher-grade sulphur concentrate that contains;
(2) the high ferro low sulfur type contains golden slag roasting production:
The Containing Sulfur mineral that a last workshop section is obtained add up to mass percent greater than 92% contain the raw material of golden higher-grade sulphur concentrate as fluidized bed furnace for pyrite-based sulphuric acid, in fluidizing furnace, carry out fluidized bed roasting, behind the gravity settling of this flue gas process pyrite-based sulfuric acid production flue gas, cyclone dust removal, the electric precipitation, enter cooling, the purification system of pyrite-based sulfuric acid production, flue gas after being purified is through double conversion and double absorption technology system sulfuric acid, obtain sulfur-bearing quality percentage composition subsequently less than 0.4%, contain the weight of iron percentage composition greater than 63%, contain golden high ferro low sulfur type and contain gold burning slag greater than 1g/t;
(3) iron ball nodulizing chloridizing volatilization degold:
More than the high ferro low sulfur type that obtains of a workshop section contain gold to burn slag be raw material, add the pelletizing caking agent, add chlorizating agent, make pelletizing after in grinding machine, moistening mill, pelletizing is carried out drying, obtain to contain the weight of iron percentage composition greater than 60%, the pellet that contains golden 0.2g/t, flue gas through gather dust gold ore;
2, according to claim 1 a kind of from contain golden sulfurous iron ore the method for comprehensive recovery of gold iron sulphur resource, it is characterized in that: described sulfurous iron ore comprises pyrite, pyrrhotite.
3, according to claim 1 a kind of from contain golden sulfurous iron ore the method for comprehensive recovery of gold iron sulphur resource, it is characterized in that: described sulfuric acid activator level is 500 gram/tons～5000 gram/tons, xanthate flotation collector agent consumption is 150 gram/tons～800 gram/ton conducts, and the pore forming material consumption is 10 gram/tons～100 gram/tons.
4, according to claim 1 a kind of from contain golden sulfurous iron ore the method for comprehensive recovery of gold iron sulphur resource, it is characterized in that: the described weight percentage that makes fineness be less than the 0.074mm grade through ore grinding is 50% to 95%.
5, according to claim 1 a kind of from contain golden sulfurous iron ore the method for comprehensive recovery of gold iron sulphur resource, it is characterized in that: described when in fluidizing furnace, carrying out fluidized bed roasting, coefficient of excess air is controlled at 1.05-1.25, maturing temperature is controlled at 900 ℃-1000 ℃, 8 tons-16 tons/square metre days of intensity of roasting, 850 ℃-950 ℃ of baking flue gas temperature.
6, according to claim 1 a kind of from contain golden sulfurous iron ore the method for comprehensive recovery of gold iron sulphur resource, it is characterized in that: dustiness is less than 0.2 gram/cubic meter behind the described flue gas ash removal, and flue-gas temperature is reduced to 400 ℃-450 ℃.
7, according to claim 1 a kind of from contain golden sulfurous iron ore the method for comprehensive recovery of gold iron sulphur resource, it is characterized in that: the quality percentage composition 0.5%～1.5% of described adding pelletizing caking agent, add the quality percentage composition 3%～10% of chlorizating agent.
8, according to claim 1 a kind of from contain golden sulfurous iron ore the method for comprehensive recovery of gold iron sulphur resource, it is characterized in that: described pelletizing is carried out drying is 1000 ℃～1300 ℃ roasting temperature 60 minutes～120 minutes.
9, according to claim 1 a kind of from contain golden sulfurous iron ore the method for comprehensive recovery of gold iron sulphur resource, it is characterized in that: described chlorizating agent is calcium chloride or sodium chloride.
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