The method of preparation of the filling mixture
(57) Abstract:The invention relates to the mining industry and can be used at the enterprises, having in its composition concentrator and leading mining systems development with the mined-out space. The method includes feeding the tailings beneficiation plant along the circular pipeline with the possibility of challenge in several of filling complexes located sequentially along its length. At each filling of the complex away from the ring pipe of the mine tailings and produce their separation in the hydrocyclone for sand and plums. From the drain of the hydrocyclone emit the condensed product, which together with sand hydrocyclone served on the education of filling mixture, and plums, which return in the circular pipeline. In the mixer to form a backfill mixture of sand, the condensed product and additives. The technical result of the invention is to provide year-round transportation of tailings from the beneficiation plant, the preparation of the filling mixture to multiple consumers with the lowest cost. 1 Il. The invention relates to the mining industry of the IR and the leading mining systems development with the mined-out space.Known method of preparing the filling mixture, including gidrotsiklonirovaniya tails concentrator with obtaining Sands, which are used as inert filler in the preparation of filling mixture (Smondyrev A. E. Technology and mechanization of filling operations - M.: Nedra, 1974, S. 144).The disadvantage of this method is loss of part of the tailings from discharge of hydrocyclones, and the impossibility of creating a continuous method of preparing filling mixture and laying-out space.The closest in technical essence and the achieved result claimed is the method of preparation of the filling mixture, including the filing of tailings beneficiation plant by pipeline backfill complex, split the tails in the hydrocyclone for sand and plums, education backfill mixture of sand and additives. (Patent RU 2019713, IPC CL. 6 E 21 F 15/00, publ. 15.09.94).The disadvantage of this method is loss of part of the tailings from discharge of hydrocyclones, and the inability to use one pipeline to serve multiple filling complexes.The objective of the invention is to provide a continuous method, pranoy factory for maintenance of several mines.The technical result of the invention is to provide year-round transportation of tailings from the beneficiation plant, the preparation of the filling mixture to multiple consumers with the lowest cost.The technical result is achieved by the fact that in the known method of preparation of the filling mixture, including the filing of tailings beneficiation plant by pipeline backfill complex, split the tails in the hydrocyclone for sand and plums, education backfill mixture of sand and additives, the pipeline is made of a ring with a possibility of tails in several of filling complexes located sequentially along its length, while in filling complex from the drain of the hydrocyclone emit the condensed product, which together with sand hydrocyclone served on the education of filling mixture, and plums, which return in a circular pipe.In this population included signs, each of which are necessary and together sufficient to achieve the technical result in all cases, the use of the invention.Overflow return in the pipeline and run it ring with a possibility of tails in neskolko for transportation by pipeline to multiple filling complexes simultaneously and maintain the pipeline constant high speed flow, thereby ensuring normal operation of the pipeline in the winter, which is especially important for mining enterprises located in areas with harsh climatic conditions.Selection from the drain of the hydrocyclone in filling complex condensed product and its direction together with the Sands of the hydrocyclone on the education of filling mixture allows for more weight to allocate the solid part of the tails to bookmarks.The method of preparation of the filling mixture is illustrated by a drawing which shows a circuit schematic of the apparatus for the preparation of filling mixture for two filling complexes.The method of preparation of the filling mixture is carried out as follows.The original tailings beneficiation plant for pre-padded circular pipe 1 serves on surface of filling complexes 2 mines or mines. In the stowing complex 2 enters the hydrocyclone 3, thickener 4 and the mixer 5. In the hydrocyclone 3 tails divided into Sands, which are used in the filling mixture, and plums, which takes slimes and coarse clay fractions. Drain hydrocyclone 3 enters the thickener 4, where the sludge and clay cyclone 3 served on the education of filling mixture in the mixer 5.In the mixer 5 in addition to sand hydrocyclone 3 and condensed product depending on the type of the bookmark serves additives such as binder and plasticizers - in the preparation hardening filling mixture or water - hydrosolate. From the mixer 5 finished stowing mixture through pipes to the laying of manufacture. For laying of pipeline to lay mines can be used for operating capital and preparatory development or the surface can be drilled.Drain thickener 4 enters the sump 6, where the pump 7 is returned in the annular pipe 1. Drain almost does not contain a solid phase and used as the transporting medium to maintain the required flow rate in the annular pipe 1 and the tailings delivery next sequentially located along the length of the annular tubing 1 backfill complex 2, where the cooking process of filling mixture similar.To remove excess tails of an annular pipe 1, resulting from the unequal performance of the concentrator surface and filling complexes, can be provided by the direction of the excess tails in Vostochnyi the clone in the annular pipe 1.An example of a specific implementation.Norilsk mining company operates a copper-Nickel ores in the mines: the lighthouse, Komsomolskaya East, Komsomolskaya Western Taimyr, October and Komsomol Rocky development systems with the mined-out space. Mined ore is fed into the Talnakh concentrator that produces copper and Nickel concentrate.For disposal of the resulting tailings, one of the options, surface filling complexes of these mines are connected by an annular pipe 1 diameter branches 8, is equal to 273 mm Drain branch pipe 9 is the diameter of 159 mm Tails concentrator pump STY-EN 8,6 fed from a thickener in a stirrer, of which the pump Prayag forced into the working branch 8 of the annular tubing 1 (pumps, the thickener and the stirrer set at the site concentrator and not shown).To ensure the smooth operation of the concentrator and surface filling complexes 2 mines to the processing plant can be installed, at least two of the thickener and two stirrer, soy is a major complexes 2 each of the mines of the mine tailings is given of an annular pipe 1 in the amount providing the mined-out space in accordance with the mine plan. After separation of the sand and underflow overflow thickener 4 returns to the ring pipe 1, while maintaining the desired velocity of flow in it.Selected Sands and the condensed product is served in the mixer 5, which enter the necessary additives, such as cement, and the mixture is directed to develop, subject to the bookmark.Alternatively, when the annular pipe 1 are connected not all filling complexes 2 enterprises, but only in relative proximity to each other. For conditions of Norilsk mining company separate annular piping can be connected filling complexes Taimyrsky mines and October and filling complexes Komsomolsky mines Western Communist East.Both versions of the drain branch circular pipes 1 are connected with the stirrer in which to return the draining and re-used as the conveying medium. The excess of the liquid phase can be enjoyed on the site. The method of preparation of the filling mixture, including filing chbosky and plums, education backfill mixture of sand and additives, characterized in that the pipeline is made of a ring with a possibility of tails in several of filling complexes located sequentially along its length, with each filling complex from the drain of the hydrocyclone emit the condensed product, which together with sand hydrocyclone served on the education of filling mixture, and plums, which return in the circular pipeline.
FIELD: mining industry.
SUBSTANCE: method includes partial filling of extracted space of side and central mains by filling stripes from lava extracting shafts. At center of semi-lava on the side of massive, wherein next extractive column will be cut, filling shaft is additionally driven, wherefrom full filling of space between central fill stripe and fill stripe on the side of massive is performed. Preparation of next extraction column is performed under protection of erected fill stripes.
EFFECT: higher safety, higher efficiency.
FIELD: mining industry.
SUBSTANCE: method includes erection of rows of main platforms along bed length in staggered order with length equal or divisible by step value for support displacement, and placing filling material thereon. Along length of main platforms between ceiling and bed soil post support is mounted, upon which filling material is fed. After that between main platforms additional platforms are erected with wedge supporting, and main platforms are rotated counter-clockwise towards pneumatic support and it is displaced for one drive step. During that filling material, while lowering, unwedges wedge support between ceiling and bed soil and forms artificial supports. After that additional platforms are rotated counter-clockwise towards pneumatic support. After movement of cleaning face for two drive steps operations for constructing artificial supports are repeated. Distance between main platforms along bed fall line are selected from mathematical expression.
EFFECT: higher efficiency.
FIELD: mining industry.
SUBSTANCE: method includes preparation and well extraction of resources of chambers with partial backfill of extraction space. Blocks of upper level relatively to blocks of lower level are placed in staggered order, while blocks are made in form of a stretched upwards hexahedron. Resources of block within one hexahedron are separated on two chambers, one of which, placed along periphery of hexahedron, after extraction and removal of ore from it is filled by hardening backfill. Second order chamber is made of hexahedron-like shape, extracted and removed under protection from artificial block on all six sides of this chamber. Removal of ore from first order chambers is performed through one removal mine - end of level ort and cross-cut in lower portion of block and intermediate sub-level cross-cuts.
EFFECT: higher efficiency.
FIELD: mining industry.
SUBSTANCE: method includes extraction of deposit resources by chambers through one of them, construction of ice-rock backfill in extracted space of primary chambers and following extraction of inter-chamber blocks. In inter-chamber blocks wedge-shaped slits are formed immediately in ceiling of deposit, space of slits is filled with ice-rock backfill, while slits are formed of inter-chamber blocks for 1/3 of width.
EFFECT: higher durability, higher effectiveness.
FIELD: mining industry.
SUBSTANCE: device has surface composed of upper section with wedges and lower section and backfill material placed on said surface. Upper section is made in form of a rectangle, composed of rectangular triangle and rectangular trapezoid with possible displacement of trapezoid along triangle hypotenuse. Lower section is made of two plates, mounted on holder, fixed to pipe for feeding compressed air. Plate, positioned above the trapezoid, is mounted with possible counter-clockwise rotation around holder. Value of greater base of trapezoid hδ is selected from relation hδ = m - 0.9k, where m - bed massiveness, m, k - size of backfill material, m.
EFFECT: simplified construction, lower laboriousness.
FIELD: mining industry, particularly to develop mineral deposit along with backfilling of worked-out areas.
SUBSTANCE: backfill mix comprises cement, grinded granulated blastfurnace slag, filler and water. The backfill mix additionally has shredded straw. Grinded diabase is used as the filler. All above components are taken in the following amounts (% by weight): cement - 2.9-5.07, grinded granulated blastfurnace slag - 15.21-16.91, grinded diabase - 52.24-53.22, shredded straw - 0.02-0.076, water - remainder.
EFFECT: increased strength and crack-resistance.
FIELD: mining industry.
SUBSTANCE: invention is designed for use in development of minerals with systems involving filling mined-out space with solidifying stowing mix. The latter is composed of broken lime-containing binder in the form of active aluminosilicate material (5.6-33.2%) and fired carbonate rocks (1.0-16.7%), tempering water with phlegmatizer (10.6-27.5%), and filler. Carbonate rocks are fired at 900-1200°C, contain active calcium-magnesium oxides CaO+MgO at least 40% and not more than 9.1% based on the total weight of mix, which are broken to screen residue 0.08 mm not more than 15%. Active aluminosilicate material is fired marl or fired clay, or fired kimberlite ore concentration tails, or granulated blast furnace slag. Tempering water contains phlegmatizer in amounts found from formula [Ph] = (0.005-0.021)*Cr/Cw, where [Ph] amount of water in 1 L tempering water, kg; (0.005-0.021) coefficient taking into account proportion between phlegmatizer and fired carbonate rocks in mix; Cr amount of carbonate rocks in mix, kg; and Cw experimentally found consumption of tempering water with mix, L. When indicated amount of CaO+MgO in mixture is exceeded, CaO and MgO are converted into hydroxides by spraying with water in amount not higher than 20% of the weight of fired carbonate rocks (on conversion to active CaO+MgO). As carbonate rocks, host rocks of kimberlite deposits are used; as filler, sand and/or concentration tails, and/or broken aluminosilicate rock; and, as phlegmatizer, industrial-grade lignosulfonate or superplasticizer.
EFFECT: improved workability of mix and reduced cost.
5 cl, 4 dwg, 3 tbl
FIELD: mining and underground building, particularly underground mining.
SUBSTANCE: method involves double-stage mineral deposit development; erecting artificial rock-and-concrete supports of previously cut primary chamber roof rock in at least two adjacent primary chambers; extracting secondary chamber resources; filling space defined by cut rock with hardening material mix. Mines for drilling and/or filling operations performing are arranged in deposit roof over or inside ore pillars of secondary chambers. Primary chamber roof rock is cut by well undercharge method. Hardening material mix is supplied via cross headings located between mine and cavities and/or via undercharged well sections remained after rock cutting operation.
EFFECT: increased safety and economical efficiency due to reduced number of drilling and filling mines or accompanying mineral excavation, possibility to use drilling and filling mines at secondary chamber development stage for ore cutting, venting and roof condition control.
5 cl, 3 dwg
FIELD: mining industry, particularly underground mineral mining with excavated space filling with hardening filling mix.
SUBSTANCE: method involves mixing grinded lime-containing binding agent, mixing water and filler; delivering the filling mix to area to be filled; filling mine space with the filling mix in several layers. The lime-containing binding agent is active silica-alumina material and burnt carbonate rock including at least 40% of active Cao+MgO. Above rock is grinded so that not more than 15% of grinded material remains on sieve having 0.08 orifice dimensions. Amount of the grinded burnt carbonate rock is selected so that active Cao+MgO is not more than 9.1% of filling mix mass. Water consumption for oxide Ca and Mg conversion in hydroxide is not more than 20% of burnt carbonate rock recalculated to active CaO+MgO. Retarder is added in mixing water in amount determined from R=(0.005-0.021)-Cr/Cw, where R is retarder content in 1 l of mixing water, kg; (0.005-0.021) is factor, which considers retarder-burnt carbonate rock ratio in the filling mix; Cr is burnt carbonate rock content in filling mix, kg; Cw is experimentally determined mixing water content in filling mix, l. Mine space filling rate is chosen from hardening time and self-heating degree of filing mass. The filling mix contains active silica-alumina material in amount of 5.6-33.2% by weight, carbonate rock burnt at 900-1200°C and containing active CaO+MgO of not less than 40% in amount of 1.0-16.7%, mixing water with retarder in amount of 10.6-27.5%, remainder is filler.
EFFECT: increased operational safety due to improved quality mine space filling, reduced costs and increased mine intensity.
6 cl, 4 tbl, 5 dwg
FIELD: mining, particularly to develop valuable mineral deposits along with goaf filling.
SUBSTANCE: fill mix comprises quick lime, grinded blast furnace slag, filler, industrial lignosulphonate and water. The fill mix additionally comprises trisodiumphosphate. All above components are taken in the following amounts (% by weight): quick lime - 1.61-4.8, grinded blast furnace slag - 10.79-14.4, filler - 60.85-62.14, industrial lignosulphonate - 0.016-0.11, trisodiumphosphate - 0.124-0.35, remainder is water.
EFFECT: increased strength and crack-resistance of fill mix over the full fill body.