The present invention belongs to the field of mineral engineering, and relates to a large-scale industrial development method for low-grade complex secondary copper sulfide ores. In the present invention, ores having different clay contents are classified; raw ores having a high clay content are directly heaped, so as to improve the permeability of an ore heap; and ores having a low clay content are crushed and then heaped, so as to improve the leaching efficiency of the ores. In order to address the problem of a high pyrite content, early capping is performed to control pyrite oxidation, regulation and control using a biological population are performed to inhibit pyrite oxidation, a solution is rationally dispatched to reduce acid, and copper-bearing rainwater is discharged to the bottom of a mining pit and stored therein; moreover, after dilution with the rainwater in the pit, the pH increases, and Fe3+ generates a precipitate, which settles at the bottom of the pit, thereby achieving the effect of reducing iron and acid, and also reducing environmental protection incidents.
A digital mine inspection system and an implementation method, relating to the technical field of digital mine management. The system comprises: a portable terminal, an unmanned aerial vehicle, a mine positioning system and a digital scheduling platform; the portable terminal carries out network communication with the digital scheduling platform by means of the mine positioning system, and instantly uploads real-time inspection information and a scheduling instruction to field inspection personnel; an unmanned aerial vehicle-mounted imaging device is used for acquiring and transmitting mine field data, and uploading a mine field fault point position and fault state information to the digital scheduling platform; the digital scheduling platform comprises an analysis module and an inspection scheduling module; the inspection scheduling module customizes unmanned aerial vehicle inspection information and loads same to the unmanned aerial vehicle; the unmanned aerial vehicle receives the inspection information; the analysis module is used for determining data transmitted in unmanned aerial vehicle inspection, determining inspection personnel closest to the fault point position, and outputting the determined data to the portable terminal.
The present invention relates to the field of non-ferrous metal metallurgy, and in particular, to a method for reducing acid and iron concentrations in a secondary copper sulfide ore bio-heap leaching system. The iron concentration in a copper heap leaching qualified solution or raffinate is reduced using a hematite iron removal process, sulfuric acid in the solution is transferred from an aqueous phase to an organic phase by using an organic extractant capable of selectively extracting sulfuric acid without extracting metal ions such as copper and ferrous irons, a loaded organic phase is back-extracted with water to obtain dilute sulfuric acid having a relatively high purity, and the solution of which the acid and iron concentrations are reduced enters a copper extraction-electrodeposition system to produce cathode copper or returns to the heap leaching system.
Disclosed is a waste rock and dry tailings combined treatment method for an open pit. The method comprises: backfilling the bottom of an open pit with a waste rock layer (2), conveying dry tailings, which have been subjected to dewatering and filter pressing, onto the waste rock layer (2), compacting the dry tailings to form a dry tailings layer (3), and alternately stacking the waste rock layer (2) and the dry tailings layer (3); laying a primary dam (4) above a stack of the waste rock layers (2) and the dry tailings layers (3), and stacking, in an inverted arrangement manner, a dry tailings pile (3') layer by layer on the upstream of the primary dam (4); and stacking a waste rock pile (10) layer by layer at the periphery of the dry tailings pile (3') stacked in an inverted arrangement manner, until a top surface of a region of the waste rock pile (10) is connected to a top surface of a region of the dry tailings pile (3'); laying a drainage prism (5) at the periphery of the waste rock pile (10); and constructing an inverted layer (6) between the waste rock pile (10) and the drainage prism (5). The method can reduce the risk of secondary geological disasters such as landslides and debris flows caused by the instability of an open pit slope, avoid safety accidents caused by tailings leakage and dam breaking, and achieve safe stacking and storage of waste rock and tailings.
A method for the smart high-precision positioning of an excavator (1) based on satellite navigation, relating to the field of the comprehensive application of satellite technology. In order to overcome the problem of being unable to implement automatic and smart high-precision positioning of an excavator (1), a transceiver (2), a measurement antenna, a single-axis angle sensor, a dual-axis angle sensor, and a vehicle-mounted computer (5) are mounted on the excavator (1) and, by means of Beidou high-precision spatial information technology and an analysis algorithm, the precise position of the excavator (1) and the main components thereof can be solved; by means of constructing side view and top view two-dimensional coordinates, the relative coordinates of each point in the operating attitude of the excavator (1) are rationally analysed and solved, and the coordinate system is converted to implement precise positioning of each main component. On the basis of precise positioning, the present invention can implement rapid positioning, increase positioning precision, and implement automatic guidance and tracking of the excavator, meeting the needs of different industrial engineering applications.
A method for quickly determining the content of acid-soluble copper in copper ore, comprising: adding 5% of sulfuric acid and sodium sulfite in a weighed ore specimen, shaking on a shaker for one hour, then filtering to obtain filtrate and bring to volume, and determining copper calibration solution with 5% of sulfuric acid in atomic absorption spectrophotometer. The test time is greatly shortened and the repeatability and reproducibility of the determination are improved. The method can more effectively reflect the content of copper leached with sulfuric acid in the production of ore or copper concentrate. Using the method to determine acid-soluble copper can effectively shorten the determination time, and avoid the problems of impact on the determination result due to too long smoking time of sulfuric acid in phase analysis and solution sputtering caused by excessive temperature during smoking. The method has high accuracy of determination of acid-soluble copper content in different copper ore standard specimens at home and abroad.
Disclosed is a double-region flotation method for a copper-cobalt sulfide ore in industrial production. The sorting process uses a flotation process flow, wherein the flotation process uses flotation in separate regions, which are divided into two regions, region 1 is mainly used for concentrate index control, and region 2 is used for recovery rate control. The method achieves a high-efficiency recovery for both copper and cobalt elements in the copper-cobalt sulfide ore in the scope of industrial production, and by using the double-region stepwise flotation method, effectively relieves the contradiction between the recovery rate and the concentrate grade in the field of ore dressing, improves the efficiency of quality control, greatly improves the optimization efficiency of the recovery rate and concentrate product index, and achieves the relatively separate control of the grade and the recovery rate.
INSTITUTE OF PROCESS ENGINEERING,CHINESE ACADEMY OF SCIENCES (China)
WANBAO MINING LTD. (China)
Inventor
Jia, Yan
Ruan, Renman
Sun, Heyun
Geng, Yi
Zhang, Dongsong
Yu, Jie
Abstract
Disclosed is a method for starting water spraying in copper sulphide ore heap bioleaching, comprising the following steps: 1) judging the feasibility of starting copper sulphide ore water spraying: if the acid production potential of the ore is greater than the acid consumption potential, water spraying is started; and 2) starting the water praying: moisturising is performed with water in the heap construction process of the copper sulphide ore, and after the completion of the heap construction, spraying is performed with water, when the pH value of a leach liquor > 3.0, circulating spraying is performed, and when the pH value of the leach liquor is < 3.0, acidophilus iron and sulphur oxidation microorganisms are inoculated in the leach liquor as a spraying liquor, and circulating spraying is continued, to gradually increase the concentrations of acid, iron and copper in the system solution, so that the starting of the copper sulphide ore heap bioleaching is achieved.
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