A kind of beneficiation method of veinlet disseminated low-grade porphyry copper ore

Abstract

The invention relates to a beneficiation method of veinlet disseminated low-grade porphyry type copper ore, belonging to the technical field of mineral metallurgy processing. The technical problem tobe solved by the invention is the difficulty of low copper ore grade and various copper minerals in mineral processing. A technology for introducing a copper and associated gold and silver mineral high-efficiency combined collector, adding lime and sodium sulfide for pulp blending in roughing process and introducing sodium silicate and sodium hexametaphosphate in the fine screening process is adopted. The problems that the recovery rate of useful minerals is low, the fine screening process is long and the concentrate grade is not high in beneficiation of the veinlet disseminated low-grade porphyry type copper ore are solved. The recovery of main metal copper and associated gold and silver is effectively increased, the quality of copper concentrate is improved, the stability of beneficiation is improved, the adverse effect of seasonal temperature difference on mineral beneficiation indexes is overcome, the circulating reuse of mineral beneficiation wastewater is realized, and the mineral beneficiation cost and energy consumption are reduced. The invention is used for beneficiation of copper sulfide ores in high-cold seasonal frozen areas.

Description

technical field

[0001] The invention belongs to the technical field of mineral metallurgical processing; in particular, it relates to a beneficiation method for veinlet disseminated low-grade porphyry copper ore. Background technique

[0002] The consumption of copper in metal materials is second only to steel and aluminum. Because of its excellent performance and wide range of uses, it has become an indispensable basic raw material and strategic resource in the fields of national economy and people's livelihood, national defense engineering and national high-tech. The types of copper deposits with utilization value in my country mainly include porphyry-type copper deposits, skarn-type copper deposits, melt-away copper-nickel sulfide deposits in ultrabasic rocks, pyrite-type copper deposits, and sedimentary-type deposits. Porphyry copper deposits, etc., among the total reserves of various copper deposits that have been proven, porphyry copper deposits account for the largest ...

Examples

specific Embodiment approach 1

[0029] A method for beneficiating veinlet disseminated low-grade porphyry copper ore, comprising the following steps:

[0030] Step 1. Crush the raw ore and grind it finely with a ball mill. The content of the grinding fineness of -0.074mm particle size grade accounts for 70% of the total weight of the ore. During the grinding process, add 1000g / t of lime, add water to adjust the slurry until the pH of the ore is 10. Obtain the ore grinding slurry for use;

[0031] Step 2. Add regulator sodium sulfide 30g / t, collector 60g / t, and foaming agent 2# oil 30g / t to the grinding pulp obtained in step 1 in order to carry out copper rapid flotation, copper rapid flotation Time 3min, get copper fast floating coarse concentrate and copper fast floating tailings, stand-by;

[0032] Step 3. The copper fast floating coarse concentrate obtained in step 2 is subjected to 2 times of beneficiation, which are respectively the 1st beneficiation and the 2nd beneficiation, and the final copper conc...

specific Embodiment approach 2

[0049] A method for beneficiating veinlet disseminated low-grade porphyry copper ore, comprising the following steps:

[0050] Step 1. Crush the raw ore and grind it finely with a ball mill. The content of the grinding fineness -0.074mm particle size grade accounts for 80% of the total weight of the ore. During the grinding process, add lime 1500g / t, add water to adjust the slurry until the pH of the ore is 11. Obtain the ore grinding slurry for use;

[0051] Step 2. Add regulator sodium sulfide 60g / t, collector 100g / t, foaming agent 2# oil 20g / t in order to the grinding pulp obtained in step 1, and perform copper rapid flotation, copper rapid flotation Time 2min, get copper fast floating coarse concentrate and copper fast floating tailings, stand-by;

[0052] Step 3. The copper fast floating coarse concentrate obtained in step 2 is subjected to 2 times of beneficiation, which are respectively the 1st beneficiation and the 2nd beneficiation, and the final copper concentrate A...

specific Embodiment approach 3

[0069] A method for beneficiating veinlet disseminated low-grade porphyry copper ore, comprising the following steps:

[0070] Step 1. Crush the raw ore and grind it finely with a ball mill. The content of the grinding fineness -0.074mm particle size grade accounts for 70-80% of the total weight of the ore. During the grinding process, add lime 1000-1500g / t, add water to adjust the slurry Until the pH of the pulp is 10-11, the grinding pulp is obtained and set aside;

[0071] Step 2. Add regulator sodium sulfide 30-60g / t, collector 60-100g / t, foaming agent 2# oil 20-30g / t in sequence to the grinding pulp obtained in step 1 to carry out rapid copper flotation Selection, copper fast flotation time 2 ~ 3min, get copper fast floating coarse concentrate and copper fast floating tailings, stand-by;

[0072] Step 3. The copper fast floating coarse concentrate obtained in step 2 is subjected to 2 times of beneficiation, which are respectively the 1st beneficiation and the 2nd benefic...

technical field

[0001] The invention belongs to the technical field of mineral metallurgical processing; in particular, it relates to a beneficiation method for veinlet disseminated low-grade porphyry copper ore. Background technique

[0002] The consumption of copper in metal materials is second only to steel and aluminum. Because of its excellent performance and wide range of uses, it has become an indispensable basic raw material and strategic resource in the fields of national economy and people's livelihood, national defense engineering and national high-tech. The types of copper deposits with utilization value in my country mainly include porphyry-type copper deposits, skarn-type copper deposits, melt-away copper-nickel sulfide deposits in ultrabasic rocks, pyrite-type copper deposits, and sedimentary-type deposits. Porphyry copper deposits, etc., among the total reserves of various copper deposits that have been proven, porphyry copper deposits account for the largest ...

Examples

specific Embodiment approach 1

[0029] A method for beneficiating veinlet disseminated low-grade porphyry copper ore, comprising the following steps:

[0030] Step 1. Crush the raw ore and grind it finely with a ball mill. The content of the grinding fineness of -0.074mm particle size grade accounts for 70% of the total weight of the ore. During the grinding process, add 1000g / t of lime, add water to adjust the slurry until the pH of the ore is 10. Obtain the ore grinding slurry for use;

[0031] Step 2. Add regulator sodium sulfide 30g / t, collector 60g / t, and foaming agent 2# oil 30g / t to the grinding pulp obtained in step 1 in order to carry out copper rapid flotation, copper rapid flotation Time 3min, get copper fast floating coarse concentrate and copper fast floating tailings, stand-by;

[0032] Step 3. The copper fast floating coarse concentrate obtained in step 2 is subjected to 2 times of beneficiation, which are respectively the 1st beneficiation and the 2nd beneficiation, and the final copper conc...

specific Embodiment approach 2

[0049] A method for beneficiating veinlet disseminated low-grade porphyry copper ore, comprising the following steps:

[0050] Step 1. Crush the raw ore and grind it finely with a ball mill. The content of the grinding fineness -0.074mm particle size grade accounts for 80% of the total weight of the ore. During the grinding process, add lime 1500g / t, add water to adjust the slurry until the pH of the ore is 11. Obtain the ore grinding slurry for use;

[0051] Step 2. Add regulator sodium sulfide 60g / t, collector 100g / t, foaming agent 2# oil 20g / t in order to the grinding pulp obtained in step 1, and perform copper rapid flotation, copper rapid flotation Time 2min, get copper fast floating coarse concentrate and copper fast floating tailings, stand-by;

[0052] Step 3. The copper fast floating coarse concentrate obtained in step 2 is subjected to 2 times of beneficiation, which are respectively the 1st beneficiation and the 2nd beneficiation, and the final copper concentrate A...

specific Embodiment approach 3

[0069] A method for beneficiating veinlet disseminated low-grade porphyry copper ore, comprising the following steps:

[0070] Step 1. Crush the raw ore and grind it finely with a ball mill. The content of the grinding fineness -0.074mm particle size grade accounts for 70-80% of the total weight of the ore. During the grinding process, add lime 1000-1500g / t, add water to adjust the slurry Until the pH of the pulp is 10-11, the grinding pulp is obtained and set aside;

[0071] Step 2. Add regulator sodium sulfide 30-60g / t, collector 60-100g / t, foaming agent 2# oil 20-30g / t in sequence to the grinding pulp obtained in step 1 to carry out rapid copper flotation Selection, copper fast flotation time 2 ~ 3min, get copper fast floating coarse concentrate and copper fast floating tailings, stand-by;

[0072] Step 3. The copper fast floating coarse concentrate obtained in step 2 is subjected to 2 times of beneficiation, which are respectively the 1st beneficiation and the 2nd benefic...

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