A method of classifying and stockpiling copper-cobalt ore

Abstract

The present application relates to a kind of copper cobalt ore classification heap method, the grade of each car ore is measured using different methods, oxidation rate, acid consumption, and ore is classified and stacked according to different properties.The present application classifies and stacks ore according to ore grade, oxidation rate and acid consumption, and uniformly numbers ore pile, which is convenient for mine management of ore pile, is conducive to the realization of multiple ore ore blending use, reduces the process fluctuation caused by the fluctuation of ore properties, thereby improving the comprehensive utilization efficiency of resources.The same kind of ore is stored in separate piles to avoid the same ore pile from continuing to be stacked before it is completely consumed, which leads to a continuous cycle that forms a "big pile" that cannot be consumed for years, solving the problem of too large difference between theoretical inventory and actual inventory data caused by cumulative error.Optimizing the obtaining method of the data of the bulk density, grade, average acid consumption and average oxidation rate of ore pile makes the obtained data more representative and can better guide production.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ore classification, and particularly relates to a method for classifying and stacking copper-cobalt ore. BACKGROUND

[0002] In actual production process of open-pit or underground copper-cobalt mine, the mined ore in the stope is generally directly put into the smelting system, and the ore blending work is basically completed in the stope. However, in order to ensure the continuity and stability of the smelting system production, sometimes part of the mined ore in the stope is selected to be stacked in the intermediate ore yard. Generally, the ore stacking is mainly through self-unloading trucks or mine cars to dump into the designated intermediate ore yard, and then the loader or bulldozer is used to push the ore flat. When used, the ore is blended with the mined ore in the stope or is used alone to supply the ore to the smelting system.

[0003] The intermediate ore yard connects the stope and the smelting system, involves the stope metal balance and the smelting metal balance, and the representative and accurate measurement of the ore yard inventory are easily affected by many factors, and the management is difficult. In addition, the ore stacking management of the mine unit is relatively insufficient, mainly reflected in the following aspects: (1) The ore stacking only uses simple numbering, such as ore stack-1, oxidized ore-A, low-grade ore, etc., and rarely uses systematic numbering management. (2) The ore stacking is generally only roughly divided according to industrial ore, low-grade ore, etc., without classification and stacking according to different properties such as ore grade, oxidation rate, acid consumption, and the same ore stack will continue to be stacked after not being completely consumed, which will continue to circulate, causing difficulties in metal balance and inventory management. (3) In order to meet the requirements of crushing and feeding, the particle size distribution of the ore is not uniform, it is difficult to obtain an accurate ore stack specific gravity, and the compaction degree of each position of the ore stack is different, and the representative of the ore stack specific gravity obtained by inventory is poor. (4) The ore grade is generally obtained by inventory sampling, and the ore grade is obtained by analyzing the ore sample picked from the surface of the ore stack, which has poor representativeness and is difficult to represent the overall grade of the ore stack. The above problems lead to that the properties of the ore used in actual production are not clear, the quality of the obtained product is greatly affected by the properties of the ore, the ore blending between multiple ores is difficult, and the resource comprehensive utilization efficiency is low. Therefore, it is of great significance to develop and design a method for classifying and stacking copper-cobalt ore. SUMMARY

[0004] In order to solve the problems of unclear properties of the ore in the ore stack, difficult ore blending between multiple ores, and low resource comprehensive utilization efficiency in the prior art, the present application provides a method for classifying and stacking copper-cobalt ore, which classifies and stores the ore according to different properties such as ore grade, oxidation rate, and acid consumption, which is beneficial to realize the ore blending between multiple ores, reduce the process fluctuation caused by the fluctuation of the properties of the ore, and improve the resource comprehensive utilization efficiency.

[0005] In order to achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0006] A method for classifying and stacking copper-cobalt ore, comprising the following steps:

[0007] The empty car is weighed to obtain the empty car mass M 空 The ore is loaded into the car and weighed to obtain the total mass M of the ore and the car;

[0008] Ore grade testing: a representative ore sample with a mass of m1 is taken from each car or other manner, a sufficient amount of acid is added to the ore sample, and the ore sample is leached; after the ore sample is completely leached, the leaching solution and the leaching residue are separated, the leaching solution is diluted to a 100 mL volumetric flask, and the concentration of copper in the leaching solution is measured by flame atomic absorption spectrometry to be c1; a blank experiment is performed with the ore sample, and the concentration of copper in the blank experiment is c0; according to The grade of the ore in each car is calculated;

[0009] Ore oxidation rate testing: a representative ore sample with a mass of m2 is taken from each car of ore or other manner, a sufficient amount of dilute sulfuric acid is added to the ore sample, and the ore sample is leached; after the ore sample is completely leached, the leaching solution and the leaching residue are separated, the copper in the leaching solution is titrated by iodometric method, and the volume V1 of sodium thiosulfate standard solution consumed by titrated copper is obtained; a blank experiment is performed with the ore sample, and the volume V0 of sodium thiosulfate standard solution consumed by titrated copper in the blank experiment is obtained, according to The oxidation rate of the ore in each car is calculated, wherein F Cu is the titration coefficient;

[0010] Ore acid consumption testing: a representative ore sample with a mass of m3 is taken from each car of ore or other manner, a sufficient amount of concentrated sulfuric acid is added to the ore sample, and the ore sample is leached, wherein the mass of concentrated sulfuric acid added is m 酸 ; after the ore sample is completely leached, the leaching solution and the leaching residue are separated, the volume V2 and the pH of the leaching solution are measured; according to 酸 =10 -pH The concentration of sulfuric acid in the leaching solution is calculated; according to The acid consumption of the ore in each car is calculated;

[0011] The ore grade, oxidation rate, and acid consumption are respectively divided into three levels A, B, and C according to the numerical values, and according to the size of the site and the production needs, the ore with the same grade level, oxidation rate level, and acid consumption level is stacked together.

[0012] Further, the ore grade greater than 3% is A level, the grade between 2-3% is B level, and the grade less than 2% is C level; the ore oxidation rate greater than 90% is A level, the oxidation rate between 80-90% is B level, and the oxidation rate less than 80% is C level; the ore acid consumption less than 150 kg / ton is A level, the acid consumption between 150-200 kg / ton is B level, and the acid consumption greater than 200 kg / ton is C level.

[0013] Further, each ore pile has a unique number, and is uniformly numbered according to "ore pile location code + stacking time + serial number".

[0014] Further, at least two piles of ore with the same grade level, oxidation rate level and acid consumption level can be stacked under the premise of site space allowing and production needs.

[0015] Further, the stacking ore pile stacking specific gravity = pile weight / pile volume = ∑(M-M 空 ) / pile volume.

[0016] Further, the pile volume is measured by RTK or unmanned aerial vehicle onboard radar.

[0017] Further,

[0018] Further,

[0019] Further,

[0020] Compared with the prior art, the beneficial effects of the present application are:

[0021] The present application provides a method for classifying and stacking copper-cobalt ore, which classifies and stacks the ore according to the ore grade, oxidation rate and acid consumption, and uniformly numbers the ore piles, which is beneficial to realize the use of various ore blending, reduce the process fluctuation caused by the fluctuation of ore properties, and thus improve the resource comprehensive utilization efficiency. The same kind of ore is stored in separate piles to avoid the same ore pile continuing to be stacked before it is completely consumed, which leads to a continuous cycle to form a "big pile" that cannot be consumed all year round, solving the problem of too large difference between theoretical inventory and actual inventory data caused by cumulative error. The method optimizes the way of obtaining the stacking specific gravity, grade, average acid consumption and average oxidation rate data of the ore pile, so that the obtained data is more representative and can better guide production. BRIEF DESCRIPTION OF DRAWINGS

[0022] The embodiments of the present application are further described below with reference to the accompanying drawings, in which:

[0023] Fig. 1 The schematic diagrams before and after the optimization of the intermediate ore pile yard are shown.

[0024] Fig. 2 A schematic diagram showing the stockpiling, standby, and consumption of ore is shown;

[0025] Figure legend: 1 - being piled, 2 - stockpiled for standby, 3 - being consumed, 4 - earthmoving equipment, 5 - loading equipment, 6 - shoveling equipment. DETAILED DESCRIPTION

[0026] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0027] A method for classifying and stockpiling copper-cobalt ore, comprising the following steps:

[0028] The empty car is weighed to obtain the empty car mass M 空 The ore is loaded into the car and weighed to obtain the total mass M of the ore and the car;

[0029] Ore grade testing: a representative mass m1 of ore sample is weighed from each car or other manner, a sufficient amount of acid is added to the ore sample, and the ore sample is leached; after the ore sample is completely leached, the leaching solution and the leaching residue are separated, the leaching solution is diluted to 100 mL in a volumetric flask, and the concentration of copper in the leaching solution is measured by flame atomic absorption spectrometry to be c1; a blank experiment is performed with the ore sample to obtain the concentration of copper in the blank experiment to be c0; according to The grade of ore per car is calculated;

[0030] Ore oxidation rate testing: a representative mass m2 of ore sample is weighed from each car of ore or other manner, a sufficient amount of dilute sulfuric acid is added to the ore sample, and the ore sample is leached; after the ore sample is completely leached, the leaching solution and the leaching residue are separated, the copper in the leaching solution is titrated by iodometric method to obtain the volume V1 of sodium thiosulfate standard solution consumed for titrating copper; a blank experiment is performed with the ore sample to obtain the volume V0 of sodium thiosulfate standard solution consumed for titrating copper in the blank experiment, according to The oxidation rate of ore per car is calculated, wherein F Cu is the titration coefficient;

[0031] Ore acid consumption testing: a representative mass m3 of ore sample is weighed from each car of ore or other manner, a sufficient amount of concentrated sulfuric acid is added to the ore sample, and the ore sample is leached, wherein the mass of concentrated sulfuric acid added is m 酸 ; after the ore sample is completely leached, the leaching solution and the leaching residue are separated, the volume V2 and the pH of the leaching solution are measured; according to c 酸 = 10-pH The concentration of sulfuric acid in the leaching liquid is calculated; according to The acid consumption per ton of ore is calculated;

[0032] The ore grade, oxidation rate and acid consumption are divided into three levels A, B and C according to the numerical values, and the ores with the same grade level, oxidation rate level and acid consumption level are stacked together according to the size of the site and the production needs, for example, ore 1 is AAB, ore 2 is BAC, and ore 3 is AAB, then ore 1 and ore 3 are stacked together.

[0033] In an embodiment of the present application, the ore grade greater than 3% is A level, the grade between 2-3% is B level, and the grade less than 2% is C level; the ore oxidation rate greater than 90% is A level, the oxidation rate between 80-90% is B level, and the oxidation rate less than 80% is C level; the ore acid consumption less than 150 kg / ton is A level, the acid consumption between 150-200 kg / ton is B level, and the acid consumption greater than 200 kg / ton is C level.

[0034] In an embodiment of the present application, each ore pile has a unique number, and is uniformly numbered according to "ore pile location code + stacking time + serial number".

[0035] In an embodiment of the present application, at least two piles of ores with the same grade level, oxidation rate level and acid consumption level can be stacked under the premise of site space allowing and production needs in the early stage.

[0036] In an embodiment of the present application, the stacking ratio of the stacked ore pile = pile weight / pile volume =∑

[0037] (M-M 空 ) / pile volume.

[0038] In an embodiment of the present application, the pile volume is measured by RTK or unmanned aerial vehicle onboard radar.

[0039] In an embodiment of the present application,

[0040] In an embodiment of the present application,

[0041] In an embodiment of the present application,

[0042] Reference is made to the accompanying drawings Figs. 1-2The ore pile after being optimized by the application has clear ore properties, and is convenient for ore blending among various ores, and the same kind of ore is stored in separate piles to avoid the same ore pile continuing to be stacked before being completely consumed, which leads to a constant cycle to form a "big pile" that cannot be consumed all year round.

[0043] The application provides a method for classifying and stacking copper-cobalt ore, and the ore is classified and stacked according to ore grade, oxidation rate and acid consumption, and the ore piles are uniformly numbered, which is convenient for the management of the ore piles in the mine, is beneficial to realize the use of ore blending of various ores, reduces the process fluctuation caused by the fluctuation of ore properties, and thus improves the comprehensive utilization efficiency of resources. The same kind of ore is stored in separate piles to avoid the same ore pile continuing to be stacked before being completely consumed, which leads to a constant cycle to form a "big pile" that cannot be consumed all year round, and solves the problem of too large difference between theoretical inventory and actual inventory data caused by cumulative error. The method for obtaining the data of the bulk density, grade, average acid consumption and average oxidation rate of the ore pile is optimized, so that the obtained data is more representative and can better guide production.

[0044] Some example embodiments of the application are described above, and it can be understood that the above embodiments are only used to explain the application and do not constitute a limitation on the protection scope of the application. The features in these embodiments can be recombined in a suitable manner, and the schemes obtained thereby are still within the protection scope required by the application. Based on the above embodiments, all other embodiments obtained by those skilled in the art without creative labor, i.e. all modifications, equivalent replacements and improvements, etc. made within the spirit and principles of the present application, are also within the protection scope required by the application.

Claims

1. A method for classifying and piling copper-cobalt ore, characterized in that, Includes the following steps: The empty vehicle's weight M is obtained by weighing the empty vehicle. 空 The ore is loaded onto the truck and weighed to obtain the total mass M of the ore and the truck. Ore grade testing: A representative ore sample of mass m1 is weighed from each truckload or by other means. Sufficient acid is added to the ore sample to leach it. After leaching, the leachate and leaching residue are separated. The leachate is diluted to a 100 mL volumetric flask, and the copper concentration c1 in the leachate is determined by flame atomic absorption spectrometry. A blank experiment is performed along with the ore sample to obtain the copper concentration c0 in the blank experiment. Based on... The grade of each truckload of ore was calculated; Ore oxidation rate test: A representative ore sample with a mass of m2 is weighed from each truckload of ore or by other means. Sufficient dilute sulfuric acid is added to the ore sample to leach it. After leaching is complete, the leachate and leaching residue are separated. Copper in the leachate is titrated using iodometric titration to obtain the volume V1 of sodium thiosulfate standard solution consumed in the copper titration. A blank experiment is performed along with the ore sample to obtain the volume V0 of sodium thiosulfate standard solution consumed in the blank experiment for copper titration. The oxidation rate of each truckload of ore was calculated, where F Cu The titration coefficient; Acid consumption test of ore: A representative ore sample of m³ is weighed from each truckload of ore or by other means. Sufficient concentrated sulfuric acid is added to the ore sample to leach it. The mass of concentrated sulfuric acid added is m³. 酸 After the ore sample has been completely leached, the leachate and leaching residue are separated, and the volume V2 and pH of the leachate are measured; according to c 酸 =10 -pH The concentration of sulfuric acid in the leachate was calculated; based on The acid consumption per truckload of ore was calculated. The ore grade, oxidation rate, and acid consumption are divided into three levels, A, B, and C, respectively, according to their numerical values. Based on the size of the site and production needs, ores with the same grade, oxidation rate, and acid consumption levels are piled together.

2. The method for classifying and piling copper-cobalt ore according to claim 1, characterized in that, The ore grade is greater than 3% and is classified as Grade A, between 2% and 3% and Grade B, and less than 2% and Grade C. The ore oxidation rate is greater than 90% and is classified as Grade A, between 80% and 90% and Grade B, and less than 80% and Grade C. The ore acid consumption is less than 150 kg / ton and is classified as Grade A, between 150-200 kg / ton and Grade B, and greater than 200 kg / ton and Grade C.

3. A method for classifying and piling copper-cobalt ore according to claim 1 or 2, characterized in that, Each ore pile has a unique number, which is uniformly numbered according to "ore pile location code + pile construction time + serial number".

4. The method for classifying and piling copper-cobalt ore according to claim 1, characterized in that, Provided that the site space allows and production needs are met, at least two piles of ore with the same grade, oxidation rate, and acid consumption can be stacked.

5. The method for classifying and piling copper-cobalt ore according to claim 1, characterized in that, The bulk density of a pile of ore = bulk weight / bulk volume = ∑(mm) 空 ) / heap volume.

6. The method for classifying and piling copper-cobalt ore according to claim 5, characterized in that, The stack volume was measured using RTK or UAV-borne radar.

7. The method for classifying and piling copper-cobalt ore according to claim 1, characterized in that, piled up 8. The method for classifying and piling copper-cobalt ore according to claim 1, characterized in that, piled up 9. The method for classifying and piling copper-cobalt ore according to claim 1, characterized in that, piled up

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