Method to prepare ore bodies in place of bedding to leaching of useful components

FIELD: mining.

SUBSTANCE: method to prepare ore bodies to leaching of useful components in place of bedding includes installation of charges into well rings (11) in the central part of the ore body, explosion of the specified well rings and subsequent injection of a process solution into the central part of the ore body via perforation channels with the branching cracks along periphery of channels, formed by the upper part of the ore body with directed blasting Charges are installed with formation of a water circular gap between an explosive charge, bottom and walls of the well, after formation of a circular gap the well is filled with water or plugged.

EFFECT: invention makes it possible to increase opening of wells and evenness of distribution of a leaching solution in the ore body volume.

2 cl, 3 dwg

 

The invention relates to the field of Geotechnology and can be used for underground leaching of metals from ores, in particular, to the preparation of the ore bodies at the place of occurrence to leaching.

Known methods of underground leaching of metals [see Heap and in-situ leaching of metals / GD Lisovsky, D.P. Lobanov, V.P. the Nazarkin, and others/ edited by S.N. Volodya. - M.: Nedra, 1982, 113 S.]. Preparation of arrays of in-situ carry out blasting ways, reaching the ore crushing. Fragmented ore can be leaching in-situ.

A close method to the invention is a method of leaching metals disclosed in the patent RU 2105876, which includes an explosive showdown ore deposits with magazynowania ore and supply of technological solutions and electricity, while the leaching of metals are the coincidence with the direction of migration solutions and electric current to the direction of lamination leached minerals.

The disadvantages of these technical solutions include: conducting large amount of preparatory-threaded work in the underground space, the need to create a compensation space for magazynowania ore in the block, the complexity of providing uniform irrigation blasted ore throughout the area, the practical difficulty of implementing feed plants the Directors under pressure.

The closest to the invention is a method of explosive preparation of the ore bodies to the leaching of useful components, including the blasting hole fans on the shaking of the array in the Central part of the ore body and subsequent injection into the Central part of the ore body process solution through the perforation tunnels with the branching cracks on the periphery of the channels formed in the upper part of the ore body directed blasts (EN 2327864).

The disadvantages of this technical solution is the low level of disclosure of genetic cracks at the detonations fans wells in the Central part of the ore body and that leads to less uniform movement of fluids in the volume of the array and, consequently, to increase the time leaching of valuable components of the ore in situ.

The objective of the invention is the preparation of small ore bodies to leach from the place of their occurrence, providing the opportunity on the basis of application wells special design maximum crack, uniform distribution of the leach solution in the volume of the ore body, uniform areal irrigation array without magazynowania ore.

The problem is solved by the method of preparation of the ore bodies to the leaching of useful components in situ, including taladnoserv fans in wells in the Central part of the ore body, blasting mentioned fans wells and subsequent injection into the Central part of the ore body process solution through the perforation tunnels with the branching cracks on the periphery of the channels formed in the upper part of the ore body directed blasts, according to which, the laying of charges is performed with the formation water of the annular gap between the explosive charge, the bottom and the walls of the borehole, after the formation of a water ring gap hole filled with water and plugging.

The technical result provided by the proposed method is to improve the efficiency of crack growth by improving the energy efficiency of combustion of the explosive.

In the private embodiment of the invention on the walls of the wells pre-applied waterproof coating.

Figure 1 shows the General scheme of blasting. In Fig 2 (a and B) is a diagram bookmarks explosives in wells.

Positions in the diagrams indicate the following.

1 - rig itself;

2 - drilling section;

3 - rising for the evaluation of crack growth;

4 - cutting ORT;

5 - drill drift;

6 - ceilings for perforating irrigation;

7 - capacity to collect productive solution;

8 - camera under the district water is ornik;

9 - scraper drift;

10 - hole fan to create irrigation channels;

11 - fans wells, providing maximum disclosure of genetic cracks in the array, the design of these wells is shown in figure 2.

The method is as follows.

1. Carry out the driving of the necessary preparatory-development workings: drilling rising 1, the drilling Zachodni 2, the cutting ORT 4, drilling drift 5, scraper drift 9, or may use a previously completed production, if they provide access to the ore body.

2. In the Central part of the block leaching (ore body) with overlying workings are drilling vertical or inclined fans wells 11.

3. Part of wells drilled leave free. Available well play the role of the compensation space of detonations completed wells on the crack opening.

4. For part of the drilled wells, intended to fill the explosive consistently perform the following work, ensure when the detonations maximum crack opening. The device of these wells is shown in figure 2.

Assess the permeability of wells drilled.

When drilling in an easily filterable rocks on the bottom and walls of the wells of applied polymer composition by spraying. Can be used any polymer composition, the IP is with a leak from the well fluids. These provide an opportunity for further filling the well with water.

When drilling in truefilter rocks work on the creation of impermeable polymeric coating is not performed.

In wells place an explosive charge on the height of LBB. At the same time provide a gap between the explosive charge, the walls and bottom of the well.

The resulting gap is filled with water, forming, thereby, a water ring gap (figa).

After that, the formed hydraulic lock plugging. The space, located in the remaining (upper) part of the well fill slurry stemming, or leave an air gap.

Alternatively, after placing the explosive charge and the borehole is filled with water completely (figb).

5. The mouth is prepared according to claim 4 wells plugging.

6. Spend an explosion on the disclosure of genetic systems of cracks present in the array. Blasting when this is accompanied by an additional impetus to enhance the action of the blast wave.

7. Evaluation of crack produced by geophysical methods of specifically covered rising 3.

8. In the upper part of the unit remains disrupted by the explosion of the array and form the "irrigation" ceilings 6. To do this, from the top of the drill Zachodni (drilling ORT) drilling the holes, put the system kumul is effective charges.

9. Produce blasting systems, shaped charges, than provide formation aimed perforation channels with branching cracks on the periphery of the perforations. Bore-holes and perforation channels are used for injection under pressure or gravity feed solution under irrigation array.

10. The collection solution is produced in the chamber 8, which establish a precinct header 7.

The process of laying charges of explosives are illustrated in figure 2 (a and B).

1. Buryats inclined or vertical borehole, the length of which depends on the thickness of the ore body to be leached. Well perform deadlock with nezabarom in the lower part of the ore body. Value nedobora is determined based on the properties of the ore and host rocks.

2. The borehole is filled with water, forming a water ring gap.

When completing wells drilled in unconsolidated permeable ores, before filling with water at the borehole wall by spraying applied polymer waterproof structure.

3. Capsule with an explosive charge placed in a sealed waterproof case, which is placed in the aquatic environment.

4. After placing the charge in the mouth of the well plugging (figa) or filled with water (figb).

5. Produce an explosion with the power of providing for the disclosure of genetic is resin.

The laying of the charges carry out in such a way that between the explosive charge, the bottom and wall of the borehole water is formed an annular gap, which gives the effect of "fracturing". After plugging water-filled borehole is formed a limited amount of camera actions explosives, which provides greater energy efficiency of its combustion. In addition, when the plugging of the well formed by the reflected shock wave, forming a secondary effect on the borehole wall. This is when the detonations has the effect of "fracturing" of the environment, the higher the level of disturbance of the array and, as a consequence, the disclosure of a large number of cracks by thinning existing voids with water. In permeable ores before filling the hole with water at the borehole wall is applied to the polymer composition that prevents leakage of water from the well prior to blasting operations.

This inception of the shells, which realizes the effect of hydraulic fracturing, it is advisable to use for disclosure of pre ore and breccia post ore cracks, as well as existing in the ore dislocation arrays.

The invention can be applied to the deposits of copper, copper-zinc, lead-zinc, copper-Nickel and other ores for leaching of valuable components from small local ore bodies and individual ore the s plots left behind a path of development, to Refine ores leaching for recovery of valuable components from rich ores by leaching.

1. The method of preparation of the ore bodies to the leaching of useful components in situ, including the laying of charges in fans wells in the Central part of the ore body, blasting mentioned fans wells and subsequent injection into the Central part of the ore body process solution through the perforation tunnels with the branching cracks on the periphery of the channels formed in the upper part of the ore body directed blasts, characterized in that the laying of charges is performed with the formation water of the annular gap between the explosive charge, the bottom and the walls of the borehole, after forming an annular clearance hole filled with water or plugging.

2. The method according to claim 1, characterized in that the bottom and sides of the wells pre-applied waterproof coating.



 

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8 cl, 5 dwg

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EFFECT: increasing the efficiency of the process cycle at reduction of costs and emission of hazardous gases.

5 cl, 9 tbl, 6 ex

FIELD: mining.

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EFFECT: invention allows improving metal extraction efficiency.

FIELD: mining.

SUBSTANCE: method for leaching of precious metals from technogenic raw material involves preparation of open working-out or capacity, waterproofing of its walls and bottom, arrangement of mineral mass in it, supply of a leaching solution, proper leaching and extraction of precious metals. The invented method differs by the fact that arrangement of mineral mass is preceded with construction in the working-out or the capacity of a system of pumping-in and pumping-out pipes perforated in lower part at the level of a future root system of plants, and after mineral mass is arranged, seeds of young plants are planted in its upper layer, which are capable of accumulating precious metals in their tissues; supply and removal of the leaching solution is performed through the system of pumping-in and pumping-out pipes after the stage of active formation of plant root system; at that, as leaching solution, active low concentrated leaching solution is used, which has passed photoelectrochemical treatment, and extraction of precious metals is performed by sorption or electric sorption of its diluted forms from pumped-out solutions and its extraction from plants extracted from mineral mass when they each a certain size.

EFFECT: invention allows improving the extraction of useful components.

4 cl

FIELD: mining.

SUBSTANCE: deposit development method using underground solution involves the following stages at which: pressure pipeline is provided, which is passed to mineral deposit containing the required mineral; at that, pressure pipeline is provided with possibility of supplying the discharged fluid to mineral deposit in order to dilute the necessary mineral and to form the extracted brine; extraction pipeline is provided, which is passed to mineral deposit and provided with possibility of supplying the extracted brine to the ground surface; discharged fluid is pumped to pressure pipeline; extracted brine is cooled during its transportation through the supply pipeline and one or more heat exchangers to separation plant; at that, cooling of the extracted brine leads to deposition of the necessary mineral, and thus formation of pulp consisting of solid crystals of the necessary mineral, which are suspended in brine; solid crystals of the necessary mineral are separated from brine in separation plant, thus forming the flow of depleted liquid brine and extracting the product in the form of solid crystals of mineral; depleted brine is transported through one or more heat exchangers to pressure pipeline; at that, discharged fluid contains the above depleted brine, and by performing the heat exchange between extracted brine and depleted brine in one or more heat exchangers in order to cool down the extracted brine and heat the depleted brine; at that, mineral crystallisation to the product in the form of solid crystals is performed due to temperature decrease of extracted brine, which takes place in the section between mineral deposit and separation plant due to heat removal from extracted brine; at that, heat removal from extracted brine is mainly performed due to heat transfer from extracted brine to depleted brine in one or more heat exchangers and heat dissipation from extracted brine to atmosphere when the extracted brine is being transported in extraction pipeline, one ore more heat exchangers and transfer pipeline to separation plant.

EFFECT: invention allows improving leaching efficiency.

21 cl, 3 dwg

FIELD: metallurgy.

SUBSTANCE: method includes drying of an industrial massif of stale tailings of upstream impoundments. Then the thickness of tailings is divided into non-productive strata including lean tailings from the upper part of the industrial massif, not exposed to hypergene changes, and productive strata from the base of the industrial massif enriched with gold and formed in the process of hypergene conversion. Then the circuit of the hypergene converted stratum is established. Afterwards tailings of upper non-productive strata are removed, and tailings of hypergene converted strata are processed. Processing is carried out by leaching with gold extraction. Gold extraction from tailings of hypergene converted productive strata is carried out with cyanidation.

EFFECT: invention provides for growth of gold production in sufficiently short periods due to simplified process cycle and reduction of time for preparation of secondary raw materials for processing.

3 cl, 1 tbl, 1 ex

FIELD: metallurgy.

SUBSTANCE: method involves construction of leakproof bottom, formation of ore pile on it, erection of sprinkling and drainage system, and in case of underground leaching - construction of pumping-in and pumping-out openings in ore deposit place; sprinkling of ore pile or supply to pumping-in openings of leaching reagent containing acid solution or acid solution in presence of reducing agent, so that production solutions containing nickel, cobalt, iron, aluminium and magnesium are obtained; their processing with extraction of nickel and cobalt; reinforcement of mother solutions with leaching reagent and their return for leaching. As leaching reagent there used are products of incomplete sulphur oxidation, which are supplied in the quantity sufficient for transition and maintenance of nickel and cobalt in the solution, as well as conversion of Fe3+ ions to Fe2+ in production solution, the pH value of which is maintained at the interval of values of 1.5-4.5, oxidation-reduction potential value is not more than 350 mV; at that, extraction of nickel and cobalt is performed using sorption, extraction and deposition methods with further reclamation of waste ore pile and reusable solutions or underground water involved in recycling.

EFFECT: increasing complete combustion of powder charges and efficiency of action of charges; increasing efficiency of extraction of nickel and cobalt; reducing consumption of acid and simplifying the flow diagram.

18 cl, 4 tbl, 4 ex

FIELD: oil and gas production.

SUBSTANCE: proposed device comprises water feed tube with bottom head Note here that the latter features length exceeding radius of reservoir and is made of flexible water feed tube furnished with mechanical muscles secured thereto and pneumatically or hydraulically communicated with pressure source to control every muscle for positioning tube end in space.

EFFECT: higher efficiency.

3 dwg

FIELD: metallurgy.

SUBSTANCE: proposed method comprises annealing of initial charge, selective leaching and analytical determination of noble metal content in produced solution. Charge annealing is performed in microwave frequency field without access of air at 550-600°C Annealed product is leached in steps by adding successive volumes of thiourea sulphide solution. Content of noble metal in obtained solutions is analytically defined to sum obtained values for determination of noble metal content in initial charge.

EFFECT: higher validity of estimation.

2 cl, 1 tbl, 2 ex

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