Method for salt deposit development along with platinum obtaining from stratum above salt layer

FIELD: mining industry, particularly for co-developing salt and platinum deposits.

SUBSTANCE: method involves detecting presence of platinum in non-soluble salt residue salt during salt deposit development; performing geological mapping of salt-bearing cavity and determining sand distribution in stratum above salt layer; drilling wells and bore pits and taking samples to determine platinum content; contouring sand deposits bearing platinum with concentration suitable for industrial development; cleaning surface; blocking out and excavating platinum-bearing sand; directing above sand to gravity separation plant; tying thereof with water in gravity separation plant to separate platinum therefrom.

EFFECT: increased complexity of deposit development.

 

The invention relates to mining, and in particular to methods for integrated development of salt deposits, and can be used to obtain deposits of potassium and magnesium and rock salts, as potash, magnesium, salt, and platinum.

In Russia currently controls about 60% of palladium production, 24% of platinum production, as well as a significant share along the way izvlekaemogo rhodium. As the main sources of platinum are deposits and deposits of sulfide copper-Nickel ores.

The deposits were discovered in the Urals in 1821 in the sediments of the valley of the Upper river Neiva, 50 km from Yekaterinburg. They were intensively developed during the period of 1845-1917, Total extraction of platinum from the Ural placers estimated at 300-400 tons [1].

Now developed other placers - Conder (artel of prospectors "Cupid"), Chad ( gang of miners ' East) on the Aldan, in the Khabarovsk region, deposits of the Koryak highlands (Koryakgeoldobycha") in Koryak AO. From placers annually extract up to 20% of platinum production in the country.

The source of alluvial platinum on the Conder is the zonal-concentric Intrusive ultramafic rocks with a diameter of 5 km, located within the Aldan Precambrian shield. The core of the intrusion presents chromatogram dunite, alternating zonal proxecto. Minerals m is the metal of the platinum group (PGM) developed in the veins of chromite. However, the main root, the source of platinum has not been detected.

Reserves of platinum placers of Conder 60 so their Length reaches in the amount of 50 km and a width of from 30 to 980 meters Capacity of the productive formation ranges from 2.2 to 2.4 m, the PGM content in the layer - 1.6 g/m3and it increases as it approaches the Intrusive up to 4 g/m3. Minimum content of platinum placers - 0.5 g/m3. As part of IPY in the placers prisutstvuet: platinum - 85%, iridium - 1.7%, osmium - 0.7%, ruthenium - 0.1%, rhodium - 0.4%, palladium - 0.5% and other elements, including gold - 9%.

Small placer deposits in Chad, Santare, Ingle was formed in connection with the manifestation of small zones of alkaline-subalkaline ultrabasic intrusions on the Aldan shield. In the early 1990-ies placer PGM were discovered in the streams of the Koryak highland. It is believed that the source of platinum - Intrusive complexes Alaska type, reaching 16 km long and 4 km wide. These intrusions contain the dunite core, changing to the periphery of the arrays olivine pyroxenite and gabbro. Placer enclosed in Quaternary gravelites, developed in the valleys of the two streams. Productive layers have a capacity of from 0.4 to 11.0 m, the content of platinum ranges from 0.7 to 5.4 g/m3. Among minerals predominate alloys, iron-platinum composition with a subordinate shares of iridium. The alluvial mining began in 1994, and the maximum in July 1998, when produced 6 tons of platinum.

Sulfide copper-Nickel ores of the Norilsk area up to 95% of the potential of the Russian IPY, which are extracted by mining and metallurgical enterprises of the district as a secondary product during the redistribution concentrates Nickel and copper. In 2000 metallurgical complex Norilsk Nickel produced 4.7 billion dollars., that amounted to 2% of the gross national. product (GDP) of Russia, with more than 50% accounted for IPY.

Norilsk platinoid-copper-Nickel deposits were discovered in 1919 in search of coal and copper. These deposits contain ore of three types: a) massive (b) disseminated and enriched with pure copper. They all contain varying quantities of platinum group metals. Among platinum group metals is dominated by palladium minerals, ores average palladium content was 6 g/t platinum and about 2 g/so

On the subject of ores containing PGM prospective study of manifestations in the black shale strata, deposits of cupriferous sandstones and other prospective targets [2].

The main tectonic unit area Verkhnekamskoe potash salt Deposit is Solikamsk salt basin, which is part of the system of the Ural foredeep. The deflection can be traced along the Western slope of the Urals at a distance of about two thousand kilometers with a width of 50 - 80 km

The mouth is updated, the content of platinum in the insoluble residue Silvina very high, in tens times higher than the minimum industrial maintenance and is 6.3-of 10.25 g/t, in the insoluble residue of halite even higher - 4,85-24.2 g/t [3].

The geological age of the salt strata suggests that the source of the demolition of platinum could be the Ural mountains.

Elevated concentrations of platinum, localized in the insoluble residue of salts formed, in our opinion, most likely in the period charge salts by the addition to them of surface waters from the land, and also due to wind erosion enriched platinum terrigenous material.

Ural raising with developed ultrabasic and basic igneous rocks was feeding the province for the formation of platinum placers on the slopes of the Ural mountains and Ural regional deflection. A positive factor for the formation of placer deposits of platinum in nagalenoj thicker Solikamsk depression was an array of gabbro-diabases in the middle reaches of the river Usvi, transit hydro network and the connection of the latter with the area, having rossypeobrazovanie indigenous source.

Rock-forming minerals of sandy rocks nagalenoj variegated strata are diopside, augite, hyperscan, enstatite, plagioclase, securit connected carbonate cement, comprising 15-18% of the breed (Kopnin, 1959). Similar pyroxene sandstones, sharply Otley is as from conventional Sandstone, the closest answer to the composition of gabbro-diabases. This gives reason to believe that their formation is associated with the destruction of the basic igneous rocks of the Urals.

In past geological epochs grain platinum accumulated in the coastal zone of the ancient Permian sea, and in the deltas of the rivers and on river terraces. The alluvium nagalenoj column has a high maturity of the complex terrigenous minerals, good catanoso and sorting debris, indicating repeated his redeposition and duration of the transport path.

The invention has no analogues.

The aim of the invention is to increase the complexity of application of salt deposits.

This objective is achieved in that in the saline depression after the discovery of platinum in the insoluble residue of salts produce exploration in sandy sediments nagalenoj strata and identify deposits of platinum.

The method is as follows.

During the development of salt deposits establish the presence of platinum in the insoluble residue of salts, produce geological mapping of the salt basin, and determine the distribution of sandy rocks in nagalenoj thicker, then in these areas carry out drilling, excavation of pits and sampling, which define the content of pay is s. Then perform the delineation of deposits of sandy rocks with industrial concentrations of platinum, surface cleaning, cutting operational blocks and the recess of platinum-containing sandy rocks. Then the rock mass containing the data the sandy rocks, sent for installation of gravity separation, where it is washed in the water stream and extracts the platinum.

The relationship between the presence of platinum in the insoluble residue of salts and its presence in the Sands nagalenoj strata in industrial quantities experimentally. During the development of the southern part of the Verkhnekamskoe potash salt deposits have established the presence of platinum in the insoluble residue of salts comprising a 9.7-48,4 g/m3. After that, in the area of the mine field of the Third Berezniki potash mine took samples of sandy rocks, which determined the content of platinum, reaching 2.2 g/m3(minimum industrial platinum content is 0.4 g/m3).

Sources of information

1. Betekhtin A., Platinum and other metals of the platinum group. - M.; Leningrad: Izd-vo an SSSR, 1935. - 148 C.

2. Russia's PGM potential. Mining Journal. 2002. V.338, No. 8685.

3. Kudryashov A.I. Verkhnekamskoe salts. - Perm: KI-RAS, 2001. - 429 S.

The method of mining salt deposits with getting platinum from nagalenoj thickness characterizing the I, when the development of salt deposits establish the presence of platinum in the insoluble residue of salts, produce geological mapping of the salt basin, and determine the distribution of sandy rocks in nagalenoj thicker, then in these areas carry out drilling, excavation of pits and sampling, which determine the content of platinum, then perform the delineation of deposits of sandy rocks with industrial concentrations of platinum, surface cleaning, cutting operational blocks and the recess of platinum-containing sand rock, then the rock mass containing the data the sandy rocks, sent for installation of gravity separation, where it is washed in the water stream and extracts the platinum.



 

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