CN114054201A - Beneficiation method for high-calcium-magnesium-sulfur-oxygen mixed copper-cobalt ore - Google Patents
Beneficiation method for high-calcium-magnesium-sulfur-oxygen mixed copper-cobalt ore Download PDFInfo
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- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
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- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
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Abstract
The invention relates to a beneficiation method of high-calcium magnesium sulfur-oxygen mixed copper-cobalt ore, which comprises the following steps: (1) roughly selecting sulfide ores; (2) selecting sulfide ores to obtain copper-cobalt sulfide concentrates; (3) roughing the oxidized ore to obtain rough copper oxide cobalt concentrate; (4) and (4) carrying out copper hydrometallurgy on the rough copper oxide cobalt concentrate. According to the invention, the sulfide concentrate and the oxidized rough concentrate are obtained by a step-by-step flotation process, most of the perovskite minerals are separated, the obtained copper oxide cobalt rough concentrate enters the next wet copper smelting process, the ore amount to be treated after flotation enrichment is only about 30% of the original ore amount, the acid consumption of subsequent wet leaching is greatly reduced, and the purposes of saving resources and reducing cost are achieved.
Description
Technical Field
The invention belongs to the technical field of ore dressing, and particularly relates to an ore dressing method for high-calcium magnesium oxysulfide mixed copper-cobalt ores, in particular to an ore dressing treatment method for complex oxysulfide mixed copper-cobalt ores containing high-calcium magnesium gangue minerals.
Background
At present, the main treatment process flow of the copper-cobalt oxide ore is crushing-ore grinding-wet process treatment to obtain a copper-cobalt product, and the main treatment process of the copper-cobalt sulfide ore is crushing-ore grinding-flotation to obtain copper sulfide concentrate and further treatment. Aiming at the high-calcium magnesium oxysulfide mixed copper-cobalt ore with copper oxide and copper sulfide, the leaching rate is low because the sulfide minerals cannot be directly leached by acid and the wet process is directly adopted; in addition, the existence of the high-calcium magnesium alkaline gangue can also greatly improve the leaching acid consumption, increase the cost and reduce the economical efficiency of the production process. The method obtains the sulfide concentrate and the oxidized rough concentrate through a step-by-step flotation process, simultaneously separates out most of calcareous magnesium gangue minerals, and the obtained oxidized copper cobalt rough concentrate enters the next wet copper smelting process, the ore amount required to be treated after flotation enrichment is only about 30 percent of the original ore amount, and simultaneously, the acid consumption of subsequent wet leaching is greatly reduced, and the purposes of saving resources and reducing cost are achieved.
In the existing flotation method for copper oxide ore, the copper oxide ore is subjected to rod milling and ball milling, then is subjected to low-intensity magnetic separation and high-intensity magnetic separation, and then is subjected to flotation and concentration, and finally is separated to obtain copper oxide concentrate and tailings, wherein the recovery rate of copper and the copper grade of the concentrate are not explicitly described; the existing beneficiation method for copper oxide cobalt ore comprises the steps of carrying out copper oxide flotation on the copper oxide cobalt ore to obtain copper oxide concentrate and flotation tailings, carrying out magnetic separation on the flotation tailings to obtain the cobalt concentrate and the magnetic separation tailings, wherein the recovery rate of copper is greater than 80%, and the recovery rate of cobalt is greater than 70%. A dressing-smelting combined treatment method for recovering complex copper oxide ore includes such steps as copper sulfide flotation and copper oxide flotation of complex copper oxide ore to obtain copper sulfide concentrate and copper oxide concentrate, and acid leaching of copper oxide concentrate and mud from copper sulfide ore flotation to obtain acid leached copper liquid.
Disclosure of Invention
The invention provides a beneficiation method of high-calcium magnesium sulfur-oxygen mixed copper-cobalt ore, which solves the defects of the prior art.
In order to solve the technical problems, the invention provides a beneficiation method of high-calcium magnesium sulfur-oxygen mixed type copper-cobalt ore, which comprises the following steps: (1) roughly selecting sulfide ores; (2) selecting sulfide ores to obtain copper-cobalt sulfide concentrates; (3) roughing the oxidized ore to obtain rough copper oxide cobalt concentrate; (4) and (4) carrying out copper hydrometallurgy on the rough copper oxide cobalt concentrate.
Has the advantages that: the invention obtains the sulfide concentrate and the oxidation rough concentrate by a step-by-step flotation process, simultaneously separates out most of the perovskite minerals, and the obtained copper oxide cobalt rough concentrate enters the next wet copper smelting process, the ore amount required to be treated after flotation enrichment is only about 30 percent of the original ore amount, and simultaneously, the acid consumption of subsequent wet leaching is greatly reduced, thereby achieving the purposes of saving resources and reducing cost.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention is provided.
The invention provides a beneficiation method of high-calcium magnesium sulfur-oxygen mixed copper-cobalt ore, which comprises the following steps:
s1, roughly selecting sulfide ores (including crushing and grinding the ores);
1) raw ore (the main components of Cu 1.0-3.5%, Co 0-0.5%, S0-0.5%, CaO 5-20%, and MgO 5-15%) is crushed and ground into raw ore pulp with the particle size of less than 0.074mm and the content of 70-80 wt%;
2) primary rough selection: sequentially adding 500g/t of NaHS, 100-200 g/t of potassium amyl xanthate and 20-60 g/t of No. 2 oil into the raw ore pulp, and stirring for 1-2 minutes; carrying out flotation for 2-5 min to obtain primary roughed middlings and primary roughed tailings;
3) secondary rough separation: sequentially adding 50-100 g/t of potassium amyl xanthate and 7-14 g/t of No. 2 oil into the primary roughing tailing slurry, and stirring for 1-2 minutes; and (4) carrying out flotation for 2-5 min to obtain secondary roughing middlings and secondary roughing tailings.
S2, selecting sulfide ores to obtain copper and cobalt sulfide concentrates;
middlings obtained by the primary and secondary sulfide ore roughing are combined for three-stage concentration, the flotation concentration is 25% -35%, sulfide concentrate is obtained, and tailings are returned to the primary sulfide ore roughing process.
S3, roughing the oxidized ore to obtain rough copper oxide and cobalt oxide concentrate;
1) primary rough selection: sequentially adding 1000-2000 g/t of NaHS, 1000-2000 g/t of potassium pentaacetate xanthate and 10-20 g/t of No. 2 oil into tailings obtained by secondary roughing of sulfide ores, and stirring for 1-2 minutes; carrying out flotation for 2-5 min to obtain primary rougher oxide concentrate and primary rougher tailings;
2) secondary rough separation: sequentially adding 200-300 g/t of NaHS, 200-300 g/t of potassium pentaacetate xanthate and 7-12 g/t of No. 2 oil into the primary roughed tailings obtained in the step, and stirring for 2 minutes; performing flotation for 5min to obtain secondary rougher oxidized concentrate and secondary rougher tailings;
3) rough selection for the third time: sequentially adding 100-200 g/t of NaHS, 100-200 g/t of potassium pentaacetate xanthate and 7-12 g/t of No. 2 oil into the secondary roughed tailings obtained in the step, and stirring for 2 minutes; carrying out flotation for 5min to obtain three-time rougher oxidized concentrate and three-time rougher tailings;
4) and (4) rough selection for four times: sequentially adding 100g/t of NaHS, 100g/t of potassium pentaacetate xanthate and 7-8 g/t of No. 2 oil into the three-time roughed tailings obtained in the step, and stirring for 2 minutes; and (5) carrying out flotation for 5min to obtain four times of rough flotation oxidized concentrates and final tailings.
S4, copper hydrometallurgy of the rough copper oxide cobalt concentrate:
and combining the concentrates subjected to the four times of oxidized ore floatation and roughing, and subsequently performing wet leaching to recover copper and cobalt respectively.
Example 1:
the copper minerals in a copper-cobalt ore mainly comprise malachite, then are peacock stone, a small amount of chalcocite, trace chalcopyrite, bornite, chalcopyrite, copper-blue, native copper and the like; the cobalt minerals mainly comprise heterogenite, a small amount of cobaltosic sulfide and cobaltite, and a small amount of cobalt is contained in some dolomite, pyrite and chlorite. The iron minerals mainly comprise limonite, trace hematite and the like; other metal minerals mainly include pyrite, galena, blende and the like. The non-metallic minerals mainly comprise dolomite and quartz, and secondly comprise chlorite, muscovite and kaolinite, and trace magnesite, calcite, illite, apatite, rutile, talc and the like.
The main valuable elements in the raw ore are copper and cobalt, wherein the copper content is 2.47 percent, the cobalt content is 0.06 percent, and the analysis results of other multi-element components are as follows:
| chemical composition | Cu | Pb | Zn | Co | S | Fe | Mo | C | SiO2 |
| Content (a) of | 2.47 | <0.005 | 0.007 | 0.060 | 0.24 | 2.88 | <0.005 | 2.25 | 60.99 |
| Chemical composition | Ag* | Au* | As | K2O | CaO | Na2O | Al2O3 | MgO | / |
| Content (a) of | <2.00 | 0.18 | <0.005 | 3.16 | 4.76 | 0.12 | 14.58 | 6.80 | / |
The method for treating the copper ore comprises the following steps
1, roughly selecting sulfide ores:
1) crushing and grinding raw ore into raw ore pulp with the particle size of less than 0.074mm and the content of 75 wt%;
2) primary rough selection: sequentially adding 800g/t of NaHS, 200g/t of potassium amyl xanthate and 35g/t of No. 2 oil into the raw ore pulp, and stirring for 2 minutes; carrying out flotation for 5min to obtain primary roughed middlings and primary roughed tailings;
3) secondary rough separation: sequentially adding 50g/t of potassium amyl xanthate and 7g/t of No. 2 oil into the primary roughing tailing slurry, and stirring for 2 minutes; and (5) carrying out flotation for 5min to obtain secondary rougher middlings and secondary rougher tailings.
2, sulfide ore concentration:
and (3) merging middlings obtained by the primary and secondary sulfide ore roughing, carrying out three-stage concentration, carrying out flotation with the concentration of 33%, obtaining sulfide concentrate, and returning tailings to the primary sulfide ore roughing process.
And 3, rough separation of oxidized ore:
1) primary rough selection: sequentially adding 1700g/t of NaHS, 2000g/t of potassium pentate xanthate and 14g/t of No. 2 oil into tailings obtained by secondary roughing of sulfide ores, and stirring for 2 minutes; carrying out flotation for 5min to obtain primary roughed oxide concentrate and primary roughed tailings;
2) secondary rough separation: sequentially adding NaHS200g/t, potassium pentaoxide xanthate 200g/t and No. 2 oil 7g/t into the primary roughed tailings obtained in the step (1), and stirring for 2 minutes; performing flotation for 5min to obtain secondary rougher oxidized concentrate and secondary rougher tailings;
3) rough selection for the third time: sequentially adding 100g/t of NaHS, 200g/t of potassium amyl xanthate and 7g/t of No. 2 oil to the secondary roughed tailings obtained in the step, and stirring for 2 minutes; carrying out flotation for 5min to obtain three-time rougher oxidized concentrate and three-time rougher tailings;
4) and (4) rough selection for four times: sequentially adding 100g/t of NaHS, 200g/t of potassium pentaacetate xanthate and 7g/t of No. 2 oil into the three-time roughed tailings obtained in the step, and stirring for 2 minutes; and (5) carrying out flotation for 5min to obtain four times of rough flotation oxidized concentrates and final tailings.
4, wet copper smelting:
and merging the rough concentrates subjected to flotation of the four times of oxidized ores, and subsequently performing wet leaching to recover copper and cobalt respectively.
Finally, sulfide concentrate with the yield of 1.77%, the copper grade of 25.51%, the copper recovery rate of 18.42%, the cobalt grade of 1.40% and the cobalt recovery rate of 42.29% is obtained; the yield is 34.85%, the copper grade is 4.69%, the copper recovery rate is 66.70%, the cobalt grade is 0.053%, and the cobalt recovery rate is 31.64%. The comprehensive recovery rate of copper dressing is 85.12%, and the comprehensive recovery rate of cobalt dressing is 73.93%.
Table 1 results of example 1
Example 2:
the copper minerals in a copper-cobalt ore of Congo (gold) mainly comprise malachite, then are peacock stone, a small amount of chalcocite, trace chalcopyrite, bornite, phosphorite, copper blue, native copper and the like; the cobalt minerals mainly comprise heterogenite, a small amount of cobaltosic sulfide and cobaltite, and a small amount of cobalt is contained in some dolomite, pyrite and chlorite. The iron minerals mainly comprise limonite, trace hematite and the like; other metal minerals mainly include pyrite, galena, blende and the like. The non-metallic minerals mainly comprise dolomite and quartz, and secondly comprise chlorite, muscovite and kaolinite, and trace magnesite, calcite, illite, apatite, rutile, talc and the like.
The main valuable elements in the raw ore are copper and cobalt, wherein the copper content is 0.94%, the cobalt content is 0.41%, and other multi-element component analysis results are as follows:
| chemical composition | Cu | Pb | Zn | Co | S | Fe | Mo | C | SiO2 |
| Content (a) of | 0.94 | 0.005 | <0.005 | 0.41 | 0.13 | 2.16 | <0.005 | 1.76 | 68.94 |
| Chemical composition | Ag* | Au* | As | K2O | CaO | Na2O | Al2O3 | MgO | / |
| Content (a) of | <2.00 | 0.04 | <0.005 | 1.74 | 4.12 | 0.11 | 11.30 | 7.31 | / |
The method for treating the copper ore comprises the following steps
1, roughly selecting sulfide ores:
1) crushing and grinding raw ore into raw ore pulp with the particle size of less than 0.074mm and the content of 75 wt%;
2) primary rough selection: sequentially adding 500g/t of NaHS, 100g/t of potassium amyl xanthate and 20g/t of No. 2 oil into the raw ore pulp, and stirring for 2 minutes; carrying out flotation for 5min to obtain primary roughed middlings and primary roughed tailings;
3) secondary rough separation: sequentially adding 50g/t of potassium amyl xanthate and 8g/t of No. 2 oil into the primary roughing tailing pulp, and stirring for 2 minutes; and (5) carrying out flotation for 5min to obtain secondary rougher middlings and secondary rougher tailings.
2, sulfide ore concentration:
and (3) merging middlings obtained by the primary and secondary sulfide ore roughing, carrying out three-stage concentration, carrying out flotation with the concentration of 33%, obtaining sulfide concentrate, and returning tailings to the primary sulfide ore roughing process.
And 3, rough separation of oxidized ore:
1) primary rough selection: sequentially adding 1000g/t of NaHS, 1000g/t of potassium pentaacetate xanthate and 20g/t of No. 2 oil into tailings obtained by secondary roughing of sulfide ores, and stirring for 2 minutes; carrying out flotation for 5min to obtain primary roughed oxide concentrate and primary roughed tailings;
2) secondary rough separation: sequentially adding NaHS300g/t, potassium pentaoxide xanthate 300g/t and No. 2 oil 12g/t into the primary roughed tailings obtained in the step (1), and stirring for 2 minutes; performing flotation for 5min to obtain secondary rougher oxidized concentrate and secondary rougher tailings;
3) rough selection for the third time: sequentially adding 200g/t of NaHS, 200g/t of potassium amyl xanthate and 8g/t of No. 2 oil into the secondary roughed tailings obtained in the step, and stirring for 2 minutes; carrying out flotation for 5min to obtain three-time rougher oxidized concentrate and three-time rougher tailings;
4) and (4) rough selection for four times: sequentially adding 200g/t of NaHS, 200g/t of potassium amyl xanthate and 7g/t of No. 2 oil into the three-time roughed tailings obtained in the step, and stirring for 2 minutes; and (5) carrying out flotation for 5min to obtain four times of rough flotation oxidized concentrates and final tailings.
4, wet copper smelting:
and merging the rough concentrates subjected to flotation of the four times of oxidized ores, and subsequently performing wet leaching to recover copper and cobalt respectively.
Finally, sulfide concentrate with the yield of 0.58%, the copper grade of 20.78%, the copper recovery rate of 12.24%, the cobalt grade of 7.98% and the cobalt recovery rate of 11.08% is obtained; the yield is 31.63%, the copper grade is 2.11%, the copper recovery rate is 67.79%, the cobalt grade is 0.96%, and the cobalt recovery rate is 72.69%. The comprehensive recovery rate of copper beneficiation is 80.03%, and the comprehensive recovery rate of cobalt beneficiation is 83.77%.
Table 2 example 2 results
The stages of the sulfide ore roughing, the sulfide ore concentrating and the oxide ore roughing can be adjusted according to the properties of the raw ore and the process requirement change of the rear-stage wet leaching.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The beneficiation method of the high-calcium magnesium sulfur-oxygen mixed type copper-cobalt ore is characterized by comprising the following steps of:
s1, roughing sulfide ores;
s2, selecting sulfide ores to obtain copper and cobalt sulfide concentrates;
s3, roughing the oxidized ore to obtain rough copper oxide and cobalt oxide concentrate;
s4, and carrying out wet copper smelting on the rough copper oxide cobalt concentrate.
2. The method for concentrating the high-calcium magnesium sulfur oxygen mixed type copper cobalt ore according to claim 1, wherein the sulfide ore of S1 comprises crushed ore.
3. The ore dressing method for the high-calcium magnesium sulfur-oxygen mixed type cuprum-cobalt ore according to claim 1, characterized in that S1 comprises the following steps:
1) crushing and grinding raw ores into raw ore pulp with the grain size of less than 0.074mm and the content of 70-80 wt%;
2) primary rough selection: sequentially adding 500g/t of NaHS, 100-200 g/t of potassium amyl xanthate and 20-60 g/t of No. 2 oil into the raw ore pulp, and stirring for 1-2 minutes; carrying out flotation for 2-5 min to obtain primary roughed middlings and primary roughed tailings;
3) secondary rough separation: sequentially adding 50-100 g/t of potassium amyl xanthate and 7-14 g/t of No. 2 oil into the primary roughing tailing slurry, and stirring for 1-2 minutes; and (4) carrying out flotation for 2-5 min to obtain secondary roughing middlings and secondary roughing tailings.
4. The ore dressing method for the high-calcium magnesium sulfur-oxygen mixed type copper-cobalt ore according to claim 3, characterized in that in step 1) of S1, the raw ore comprises the following main components in percentage by weight: 1.0 to 3.5 percent of Cu1, 25 to 0.5 percent of Co0, 0.5 percent of S0, 5 to 20 percent of CaO and 5 to 15 percent of MgO.
5. The ore dressing method for the high-calcium magnesium sulfur-oxygen mixed type copper-cobalt ore according to claim 1, characterized in that in S2, middlings obtained by the primary and secondary sulfide ore roughing in S1 are combined and subjected to three-level concentration, the flotation concentration is 25% -35%, sulfide ore concentrate is obtained, and tailings are returned to the primary sulfide ore roughing process.
6. The ore dressing method for the high-calcium magnesium sulfur-oxygen mixed type copper-cobalt ore according to claim 1, characterized in that S3 comprises the following steps:
1) primary rough selection: sequentially adding 1000-2000 g/t of NaHS, 1000-2000 g/t of potassium pentaacetate xanthate and 10-20 g/t of No. 2 oil into tailings obtained by secondary roughing of sulfide ores, and stirring for 1-2 minutes; carrying out flotation for 2-5 min to obtain primary rougher oxide concentrate and primary rougher tailings;
2) secondary rough separation: sequentially adding 200-300 g/t of NaHS, 200-300 g/t of potassium pentaacetate xanthate and 7-12 g/t of No. 2 oil into the primary roughed tailings obtained in the step, and stirring for 2 minutes; performing flotation for 5min to obtain secondary rougher oxidized concentrate and secondary rougher tailings;
3) rough selection for the third time: sequentially adding 100-200 g/t of NaHS, 100-200 g/t of potassium pentaacetate xanthate and 7-12 g/t of No. 2 oil into the secondary roughed tailings obtained in the step, and stirring for 2 minutes; carrying out flotation for 5min to obtain three-time rougher oxidized concentrate and three-time rougher tailings;
4) and (4) rough selection for four times: sequentially adding 100g/t of NaHS, 100g/t of potassium pentaacetate xanthate and 7-8 g/t of No. 2 oil into the three-time roughed tailings obtained in the step, and stirring for 2 minutes; and (5) carrying out flotation for 5min to obtain four times of rough flotation oxidized concentrates and final tailings.
7. The beneficiation method for the high-calcium magnesium sulfur oxygen mixed type cuprum-cobalt ore according to any one of claims 1 to 7, characterized in that S4 specifically comprises: and (4) merging the concentrates obtained in the four times of oxide ore roughing in the step S3, and subsequently entering a wet leaching process to recover copper and cobalt respectively.
8. The ore dressing method for high-calcium magnesium oxysulfide mixed copper-cobalt ore according to claim 7, characterized in that the number of stages of the above-mentioned sulfide ore roughing, sulfide ore concentrating and oxide ore roughing can be adjusted according to the properties of raw ore and the process requirements of the later stage wet leaching.
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| CN114950712A (en) * | 2022-05-27 | 2022-08-30 | 华刚矿业股份有限公司 | Combined treatment process for comprehensively recovering copper and cobalt |
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