mining method of mining trona

Tronaunderground mining techniques – bore hole, block ...

Mining. literally means extraction.Our Mother Earth has lots of resources deep within her and mining is the method of extracting all these valuable resources from the earth through different means.There are different methods to extract these resources which

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US3778108A - Trona mining method - Google Patents

In the mining of a substantially horizontal bed of trona, stronger than the overlying and underlying strata, the method of driving substantially parallel entries into the trona formation, connecting said entries by at least one primary passage thereby defining the main trona pillar to be mined, supporting the roof of a primary passage by means of a movable roof supporting structure and mining ...

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US3402968A - Method for mining trona - Google Patents

Method for mining trona Download PDF Info Publication number US3402968A. US3402968A US60323666A US3402968A US 3402968 A US3402968 A US 3402968A US 60323666 A US60323666 A US 60323666A US 3402968 A US3402968 A US 3402968A Authority US United States Prior art keywords trona pillars mined mining pillar Prior art date 1966-12-20 Legal status (The legal status is

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Trona - Wikipedia

Trona (trisodium hydrogendicarbonate dihydrate, also sodium sesquicarbonate dihydrate, Na 2 CO 3 •NaHCO 3 •2H 2 O) is a non-marine evaporite mineral. It is mined as the primary source of sodium carbonate in the United States, where it has replaced the Solvay process used in most of the rest of the world for sodium carbonate production. Etymology. The word entered English by way of either ...

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CA975388A - Trona mining method - Google Patents

CA975388A - Trona mining method - Google Patents Trona mining method Info Publication number CA975388A. CA975388A CA163,499A CA163499A CA975388A CA 975388 A CA975388 A CA 975388A CA 163499 A CA163499 A CA 163499A CA 975388 A CA975388 A CA 975388A Authority CA Canada Prior art keywords trona mining trona mining Prior art date 1972-02-29 Legal status (The legal

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CA975388A - Trona mining method - Google Patents

CA975388A - Trona mining method - Google Patents Trona mining method Info Publication number CA975388A. CA975388A CA163,499A CA163499A CA975388A CA 975388 A CA975388 A CA 975388A CA 163499 A CA163499 A CA 163499A CA 975388 A CA975388 A CA 975388A Authority CA Canada Prior art keywords trona mining trona mining Prior art date 1972-02-29 Legal status (The legal

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Major Mines Projects Ciner Trona Mine

In addition, the trona in mining beds has a higher concentration of soda ash as compared to the trona mined at other locations in the Green River Basin, which is typically imbedded or mixed with greater amounts of halite and other impurities. Ciner's trona ore is generally composed of approximately 80% to 89% pure trona. Mining Methods. Continuous; Room-and-pillar; Summary: Company's mining ...

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US4652054A - Solution mining of trona or nahcolite ore ...

A cyclic solution mining method that uses aqueous sodium hydroxide for recovering valuable alkali values, preferably as soda ash, from subterranean deposits of trona or nahcolite, even when such deposits are NaCl-contaminated. The aqueous sodium hydroxide mining solvent is generated via electrodialysis of a recirculating sodium chloride brine stream.

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Topic 8: Mining Methods Part IV: In-Situ Leaching (ISL ...

Solution mining are among the most economical of all mining methods but can only be applied to limited ... Trona (NaHCO 3.Na 2 CO 3.2H 2 O), Nahcolite (NaHCO 3), Epsomite {or Epsom salts }

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Longwall mining of trona with prefracturing to prevent ...

In dry mining of trona by usual methods such as the room-and-pillar and the long wall mining methods, dust formation, energy requirements, and mining machine wear are reduced and mining tool life is increased by prefracturing the trona in situ prior to mining by (a) driving holes into the trona bed to be mined; (b) introducing fracturing agent into the holes, and (c) causing the fracturing ...

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The buried treasure of trona rockspringsnews

13/02/2012  Continuous mining is the least efficient, said Pitts, because it produces batches of trona ore in contrast to bore mining, which continually feeds the ore by conveyor belt. While long-wall mining is the most productive method, it is also the most expensive. FMC is one of the few companies that use the long-wall method. Between 11 million and 13 ...

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Mining method for co-extraction of non-combustible ore

The invention relates to a mining method for co-extraction of trona and methane. BACKGROUND OF THE INVENTION. Mine methane is defined as a gas of predominately methane (CH 4) with lower concentrations of non-methane hydrocarbons, nitrogen, ammonia, carbon dioxide, and other trace gases. Mine methane is released into the mine atmosphere during the mining of trona. Trona ore is a

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(PDF) SME Mining Engineering Handbook, Third Edition

trona occur as economic ores, they are typically laterally . ... Underground mining method is more selective than the surface mining method counterpart, but the degree of this selectivity depends ...

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(PDF) Underground mining Methods - ResearchGate

2) Room (Bor d)-and-Pillar mining (or con tinuous mining) method It is the most common supported pillar method, designed and used primarily for mining flat-lying

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Iron Ore Mining Techniques Metal Extraction

MINING AND PROCESSING: Iron ore mining can be broadly divided into two categories namely 1) manual mining which is employed in small mines and 2) mechanized mining is suitable for large iron ore mines. Manual mining method is normally limited to float ores and small mines. Mining of reef ore is also being done manually on a small scale. The ...

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Trona - Wikipedia

Trona (trisodium hydrogendicarbonate dihydrate, also sodium sesquicarbonate dihydrate, Na 2 CO 3 •NaHCO 3 •2H 2 O) is a non-marine evaporite mineral. It is mined as the primary source of sodium carbonate in the United States, where it has replaced the Solvay process used in most of the rest of the world for sodium carbonate production. Etymology. The word entered English by way of either ...

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Mining method for co-extraction of non-combustible ore

The invention relates to a mining method for co-extraction of trona and methane. BACKGROUND OF THE INVENTION. Mine methane is defined as a gas of predominately methane (CH 4) with lower concentrations of non-methane hydrocarbons, nitrogen, ammonia, carbon dioxide, and other trace gases. Mine methane is released into the mine atmosphere during the mining of trona. Trona ore is a

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Topic 8: Mining Methods Part IV: In-Situ Leaching (ISL ...

Solution mining are among the most economical of all mining methods but can only be applied to limited ... Trona (NaHCO 3.Na 2 CO 3.2H 2 O), Nahcolite (NaHCO 3), Epsomite {or Epsom salts }

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Solution mining of trona or nahcolite ore with aqueous ...

The method of the present invention relies on the electrolytic production of two solvents that are utilized in the solution mining of subterranean ore deposits of trona or nahcolite. The invention employs aqueous sodium hydroxide as the primary solution mining solvent, while nevertheless avoiding the unwanted byproducts (like chlorine) that typically result from electrolytic production of ...

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The buried treasure of trona rockspringsnews

13/02/2012  Continuous mining is the least efficient, said Pitts, because it produces batches of trona ore in contrast to bore mining, which continually feeds the ore by conveyor belt. While long-wall mining is the most productive method, it is also the most expensive. FMC is one of the few companies that use the long-wall method. Between 11 million and 13 ...

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(PDF) SME Mining Engineering Handbook, Third Edition

trona occur as economic ores, they are typically laterally . ... Underground mining method is more selective than the surface mining method counterpart, but the degree of this selectivity depends ...

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Mining Methods – EXCELLENCE IN MINING Creativity ...

21/07/2016  Room-and-pillar mining is the most common unsupported method, used primarily for flat-lying seams or bedded deposits like coal, trona, limestone, and salt. Support of the roof is provided by natural pillars of the mineral that are left standing in a systematic pattern.

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US Patent for Methods for constructing underground ...

28/10/2014  This bed configuration is costly to mine by conventional mining methods but this remains the dominant trona mining method. The practice of solution mining pillars does not materially improve the overall high soda ash production cost due to the high cost initial trona mining. There has been no known experimental or commercial activity to apply the directional drilling solution-mining methods ...

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Iron Ore Mining Techniques Metal Extraction

MINING AND PROCESSING: Iron ore mining can be broadly divided into two categories namely 1) manual mining which is employed in small mines and 2) mechanized mining is suitable for large iron ore mines. Manual mining method is normally limited to float ores and small mines. Mining of reef ore is also being done manually on a small scale. The ...

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(PDF) Mining Methods: Part I-Surface mining

Solution mining includes both borehole mining, such as the methods used to extrac t sodium chloride or sulfur , and leaching, either through drillholes or in dumps or heap s on the surface. 2 ...

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