SU1352152A1 - Method of underground leaching sulfide-containing polymetallic ores - Google Patents

Abstract

The invention relates to the mining industry and m. used in the development of mineral deposits. The goal is to increase the efficiency of in-situ leaching to increase the degree of extraction of polymetals, shorten the life of the unit and reduce the consumption of leaching reagent. For this, the ore deposit is opened by mine workings, and then the ore is beaten off and stored at the place of occurrence. Initially, the ossified gas through the wells is pre-irrigated with mine waters. The volume of water is determined from the ratio of V and V; WITH; / l J s; , iti where p is the mass of the gassed ore in the block, kg; q- is the specific consumption of mine water theoretically necessary for the oxidation of 1 kg of ore mineral, kg / kg; with; - content of ore mineral in ore,%; i - 1,2, ..., p - the amount of ore minerals in the ore; p- density of mine water, kg / m.Ko-. The amount of compressed air required for the oxidation of sulphides is also determined and from a given ratio. After the ore is heated as a result of the exothermic reaction to 50-60, the air supply is stopped. Subsequently, the leaching solution, in which sodium chloride is added, is started. Leaching leads to a minimum allowable decrease in the concentration of polymetals in productive solutions. 1 3, p, f-.T1Y "

Description

The invention relates to the mining industry and is intended to be used in the development of mineral deposits, mainly sulphide-containing polymetallic ores, by the in-situ leaching method.

The purpose of the invention is to increase the efficiency of underground leaching by increasing the degree of extraction of Polymetal, by reducing the life of the block and reducing the consumption of detergent reagent,

The method is realized in the following way.

The ore deposit is opened by mine workings, and then the ore is beaten off and zagaziniruyut at the place of occurrence.

At first, the gassed ore of pre-2– oxidation occurs gradually, after 1.5–2 months after the supply of the oxidant (oxygen of the air). The time of maximum development of oxidative processes and release due to this is irrigated with mine water by means of irrigation drift through the wells in the amount necessary for its moistening and about

from the ratio

m

.

t rt

l-l

mass of ores in the block, kg;

mine specific consumption, theoretically necessary for Oxidation of 1 kg i-ro ore mineral, kg / kg;

the content of i-ro ore mineral in ore,%;

the amount of ore minerals in the ore;

density of mine water, kg / m, the ore is supplied with air in the amount Necessary for oxidation in and determined from

P

t :: II

) q; c;

s., I

0,2 p where g, is the specific consumption of oxygen,

theoretically required oxidation dd 1 kg i-ro ore mineral, kg / kg; 0,2 -. Oxygen content in 1 m

air;

p is the density of air, kg / m. In order to evenly distribute and develop the oxidative process in the ore, air is supplied to the stored

unit by pluyami, connected to the public 1 akhtnoy highway.

Moistened mine floors, the stained gas ore in the block under the influence of air gradually begins to undergo an oxidation progression. The oxidation of sulphide ores is an exothermic process and is accompanied by significant heat generation, the amount of which depends on the percentage of sulphide minerals in the ores. The maximum amount of heat is emitted in the case of

oxidation of sulfide ores themselves. Experimental studies show that the oxidation of ore and the temperature of the ore in them as a result of exothermic reactions

t 1.5-2 months after the supply of oxidant (oxygen). The time for the maximum development of oxidative processes and the release of heat as a result of this can be determined by measuring the temperatures of the oxidized mazaged ores. After that, the air supply is stopped and the supply of leaching of its solution on the basis of

sodium chloride evenly over the entire surface of the aerated ores through. The leaching solution under the action of heat generated during the oxidation of the ore masses is heated to 50-60 ° (;), as a result, the useful component passes into the solution, since it is known that the use of heated solutions for higher levels, increases the

the speed of the process of extracting metal from ore, reducing the consumption of reagent and increasing the concentration of useful components in productive solutions. The introduction of sodium chloride into the solution accelerates the dissolution of lead sulfate. Collection of the productive solution is carried out with the help of drainage wells in the drainage drift. As the intensity of oxidative processes decreases.

in the aerated ore, the amount of heat released decreases, as a result of which the temperature of the pumped-out productive solutions gradually decreases to the temperature of

leaching solutions, and the concentration of the useful component in them is reduced to the minimum allowable, the solution is stopped to stop, the unit is allowed to stand with the feed

313521

air, then the leaching process is repeated.

Claims (2)

Invention Formula 1, The method of underground vanschel sulphide-containing polymetallic ores, including opening the ore deposit with mine workings, breaking and storing ore at the place of occurrence, supplying compressed air and leaching solution to the unit with heating the solution with heat, released during the exothermic oxidation of sulfide sulfidic sulfides. - ores, and the pumping of productive solutions to the surface, characterized in that, in order to increase the efficiency of the in-situ leaching by increasing the degree of extraction of polymers thallium abbreviations unit processing time and reducing reactant flow to the feed unit vschelachi- vayuschego solution zamagazinirovannuyu ORE oroBtayut mine waters in an amount emom determined from the ratio: n m C-ii V RP 1 1 1 mass of ore in the block, kg; specific consumption of mine water, theoretically necessary for Editor A.Revin Order 5548/32 Compiled by M, Podol ko Tehred A. Kravchuk Proofreader S. B1ekmar Circulation 533 Subscription VNSHSHI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d, 4/5 Production and printing company, Uzhgorod, st. Project, 4 oxidation kg of ore mineral, kg / kg; with; - content of ore mineral in ore,%; 1 I ,, ... n is the quantity of ore minerals in the ore; p is the density of mine water, kg / m, compressed air is fed to the block before leaching in an amount determined by from the ratio P m  hedgehog. but. where q 0,2 p - specific consumption of oxygen, theoretically required for the oxidation of 1 kilogram of ore mineral, kg / kg; p is the density of air, kg / m; 0.2 - oxygen content in 1 m air, and after heating the ore as a result of the exothermic reaction to 50-60, the air supply is stopped, and sodium chloride is added to the leach solution and leaching is carried out until the concentration of polymetals in the production solutions is reduced to the minimum possible, 2. The method according to claim 1, 1 and 2, so that air and the leaching solution are fed into the unit cyclically until complete removal of the polymetals from the magnetized ores.