RU2163511C2 - Production line for working of prospecting gold-diamond- containing loose rocks - Google Patents

Abstract

FIELD: mineral prospecting, particularly, testing of loose rocks including placers. SUBSTANCE: production line includes loading device; impeller disintegrator; three-sieve revolving screen with internal perforation of 16 mm and more, medium perforation of 8 mm, external perforation of 3 mm; and device for receiving, separation and direction of flows of undersize -3 mm fraction and interdrum -8+3 mm fraction made for separation of upper product sizing 0.1 mm by means of shutoff devices and direction to main and control centrifugal separators for gold trapping; single-pan concentrator for recovery from interdrum product sizing +8-16 mm of noble metal nuggets and large diamond crystals; two parallel pans of vibration concentrator for recovery from lower product sizing -8+0.1 mm of noble metals and diamonds; finishing and control centrifugal separators for additional trapping of gold and minerals of platinum group. EFFECT: higher recovery of noble metals and diamonds. 1 dwg

Description

The invention relates to the field of mineral exploration, in particular to testing loose rocks, including placer deposits, weathering crusts and other deposits containing free noble metals, their solid solutions, intermetallic compounds, other mineral types of noble metals and diamonds. The invention can also be used in the presence in the samples of precious stones (gems) with a density of more than 3.2 g / cm ³ or together both.

 Known basic production line for the processing of gold and platinum-containing exploration samples, including devices installed and interconnected during the technological process by vehicles: loading device, impeller disintegrator, double screen drum disintegrator with perforation of 8 and 3 mm, the main and control centrifugal separators for catching gold finer than 3 mm, a lock for catching gold with a particle size of 8 to 3 mm, lapping vibration-centrifugal separator VTsDS for fine-tuning tors separators and gateway. This production line is designed as a concentration plant POU4-2M and a finishing separator of the VDSDS (M. S. Melnikov, Modern methods and technical means of processing samples in the exploration of placer gold deposits, M., 1990, p. 45. Geol. Econom. Forecast methods , assessment and exploration of deposits of solid minerals. VIEMS review).

 The disadvantage of this line is the inability to extract diamonds, the lack of efficiency of the gateway and the limited size of the capture (-8 mm) of nuggets.

 A known production line for processing exploratory gold-diamond-containing samples of loose rocks, including a loading device, impeller disintegrator, drum screen disintegrator, pump station with a water and slurry piping system, main and control centrifugal separators for trapping gold (SU 1210291 A, B 05 B 5/00, 07/30/08).

 The disadvantage of the production line is the impossibility of extracting gold nuggets, platinum group minerals and diamonds larger than 8 mm.

 The proposed production line for processing exploratory gold-diamond-containing samples of loose rocks includes the following equipment installed during the technological process and connected by vehicles of enrichment product flows: loading device, impeller disintegrator operating in the “soft” mode, three-screen drum screen disintegrator with internal perforation 16 mm or more, with an average perforation of 8 mm and an external 3 mm, a device for receiving fractions of -8 + 3 and -3 mm, separation and direction of flows d -3 mm and inter-drum -8 + 3 mm fractions, made with the possibility of separation by means of cut-offs of the upper product with a grain size of 0.1 mm, sent to the main and control centrifugal separators for trapping gold, a single-channel vibration concentrator for extraction from the inter-drum product with a grain size of + 8- 16 mm of precious metal nuggets and large diamond crystals, two parallel-mounted trays of a vibration concentrator for extraction from the lower product -8 + 0.1 mm into a collective concentrate of precious metals and a diamond finishing and controlling centrifugal separators for collecting additional gold and platinum group minerals, respectively, of the concentrates and tailings vibrating trays centrifugal concentrators and pumping station and water slurry pipelines system.

 The drum screen disintegrator is made of three screens with an internal perforation of 16 mm or more, an average perforation of 8 mm and an external 3 mm. The size of the maximum perforation - the inner drum is determined by the possible size of the nuggets and crystals of diamonds that may occur in a particular field being developed.

 An inter-drum product with a particle size of + 8-16 mm or more is sent to a single-channel vibration concentrator with three enrichment zones formed by rapidly opening partitions to capture nuggets and diamond crystals larger than 8 mm.

 The direction of the slimy particles (-0.1 mm) to the main and control separators allows efficient extraction of fine and fine fractions of gold and platinum group minerals.

 The direction of the tailings of the vibration concentrator to the centrifugal separator allows you to additionally capture gold and platinum group minerals from 8 to 0.1 mm.

 Concentrates of the main trays of the vibration concentrator are fed to a finishing centrifugal separator to reduce and obtain the final concentrate of precious metals. The tailings of the finishing centrifugal separator and concentrates of the single-channel vibration concentrator are fed to the finishing tray to obtain the final gold-diamond-containing concentrate.

 Concentrates of the finishing tray and centrifugal separators are sent to the laboratory of the batch (expedition) to isolate diamonds, large classes of gold and minerals of the platinum group and conduct analytical work on the analysis of small classes.

 Processing of exploratory samples of loose rocks on this production line allows, in accordance with modern requirements for the quality of processing of exploratory samples, reliably using gravitational environmentally friendly methods to establish in the samples the content of free noble metals from micron sizes to the maximum nuggets encountered in the deposit, and diamonds from 0.1 mm to their maximum size and increase the reliability of testing.

 A processing line for processing exploratory gold-diamond-containing samples of loose rocks is shown in the drawing.

 The technological line includes a loading device 1, an impeller disintegrator 2, a three-screen drum screen-disintegrator 3, a single-channel vibration concentrator 4, a device for receiving, separating and directing flows 5, the main 6 and control 7 centrifugal separators, a vibration concentrator 8, a finishing centrifugal separator 9, lapping vibration tray 10, control centrifugal separator 11.

 The technological line works as follows.

 The initial sample is loaded into the loading device 1 and sent to the impeller disintegrator 2 with lined working surfaces of the container and the working body, where it is disintegrated in the aquatic environment without violating the integrity of the diamond crystals. When processing unrelated and easily washed samples, the disintegration operation is not carried out. Disintegrated material or unbound and easily washed samples enter a three-unit drum screen-disintegrator 3 with internal perforation of 16 mm or more, average perforation of 8 mm and external 3 mm. In a drum screen-disintegrator, the material is subjected to intensive mixing, rubbing from clay smears, uncleared pieces of clay are additionally disintegrated and scattered into four fractions. A large fraction of +16 mm or more is activated in the dump. The inter-drum product with a particle size of + 8-16 mm or more enters the single-channel vibration concentrator 4 with three enrichment zones formed by quick-disconnect partitions, where material is segregated with the content of precious metal nuggets and large diamonds in the enrichment zones. The concentrate of the vibration concentrator 4 is sent to the finishing vibration tray 10, the tails of the tray of the vibration concentrator 4 are dumped into the dump.

 The sublattice (-3 mm) and inter-drum (-8 + 3 mm) fractions enter the device 5 for extraction with the help of a cutter of the upper product with excess water and slimy particles (-0.1 mm) and distribution of the lower product (-8 + 0, 1 mm) in two streams.

 The upper product is sent to centrifugal separators - the main 6 and control 7 to extract very fine and fine particles of precious metals. The tailings of the control separator are removed to the dump.

 The lower product (-8 + 0.1 mm) is fed in two streams to two parallel-mounted trays of the vibration concentrator 8 for extraction of precious metals and diamonds into collective concentrates. The concentrates of the vibration concentrator 8 are fed to a finishing centrifugal separator 9 to reduce and obtain the final concentrate of precious metals. The tailings of the finishing centrifugal separator 9 are sent to the finishing vibration tray 10 to obtain the final gold-diamond-containing concentrate. The tailings of the lapping vibration tray 10 are sent to the dump.

 The tailings of the vibration concentrator 8 enter the control centrifugal separator 11 for additional capture of precious metals, and the tailings of the separator are dumped into the dump.

 Concentrates of the finishing tray 10 and centrifugal separators 9 and 11 are sent to the laboratory of the batch (expedition) for the extraction of diamonds, the separation of large classes of gold and minerals of the platinum group and the analysis of small classes.

 The pump station through the piping system delivers water from the settling pond (or other water source) to all the apparatuses of the technological line, the slurry piping system connects the enrichment apparatus and devices into a single technological line for sample processing.

Claims (1)

 A processing line for processing exploratory gold-diamond samples of loose rocks, including a loading device, an impeller disintegrator, a drum screen disintegrator, a pump station with a water and slurry piping system, a main and control centrifugal separator for collecting gold, characterized in that the drum screen disintegrator three-mesh with internal perforation of 16 mm or more, average perforation of 8 mm, external 3 mm and with a device for receiving, separating and directing flows - 3 mm and inter-drum - 8 + 3 mm fractions, capable of separating by means of cut-offs of the upper product with a particle size of 0.1 mm, sent to the main and control centrifugal separators for trapping gold, and the line is equipped with a single-channel vibration concentrator for extraction from the inter-drum product with a particle size + 8-16 mm of precious metal nuggets and large diamond crystals, two parallel-mounted trays of a vibration concentrator for extraction from the lower product -8 + 0.1 mm to the collective a concentrate of precious metals and diamonds and lining and control centrifugal separators installed after the trays for additional trapping of gold and minerals of the platinum group, respectively, from concentrates and tails of the trays of vibration concentrators.