carbon_sulfide_emissions_in_nickel_mining_operations

Product catalog summary

Overview

The document discusses the use of chemicals in the mining industry, specifically focusing on the flotation process used to recover sulphide minerals containing metals like nickel. Sodium Ethyl Xanthate (SEX) is highlighted as a common flotation agent that decomposes into Ethanol and Carbon Disulfide/Carbonyl Sulfide, which need monitoring in indoor air at enrichment plants.

Storage and Maintenance

Xanthate solutions are stored in tanks that require periodic cleaning due to sludge buildup. This cleaning releases sulfur-containing gases (CS2, COS), with intervals ranging from 3 to 12 months.

Worker Exposure

During the flotation process, workers may be exposed to Carbon Disulfide (CS2) while checking flows or adjusting pulp levels.

Measurement Solutions

A portable FTIR multi-gas analyzer is recommended for accurate and reliable readings of CS2 and COS. It requires simple calibration and can measure up to 25 gases, making it versatile for occupational health measurements in mining.

Product Information

The DX4040 Portable FTIR Gas Analyzer is highlighted, capable of short-term and periodic measurements in field conditions. It is battery-powered and can be used with a wireless handheld computer.

Typical Components for Nickel Refining Applications

Water (H2O): 0 - 5 vol-%
Carbon Dioxide (CO2): 0 – 20,000 ppm
Carbon Monoxide (CO): 0 – 1,000 ppm
Sulfur Dioxide (SO2): 0 – 400 ppm
Carbonyl Sulfide (COS): 0 – 50 ppm
Carbon Disulfide (CS2): 0 – 50 ppm
Nickel Carbonyl (Ni(CO)4): 0 - 5 ppm

Additional Information

The document notes that this application note is an informative example and not a technical specification sheet. Product configurations are application-dependent, and specific details may vary. For more information, contacting a local Gasmet sales representative is recommended.

Catalog excerpts

carbon_sulfide_emissions_in_nickel_mining_operations-1

• Flotation process • Sodium Ethyl Xanthate • Carbon Disulfate OVERVIEW The mining industry uses chemicals as 'flotation' agents in the recovery of sulphide minerals containing metallic elements (e.g., copper, nickel, silver, gold) from ore slurries. Sodium Ethyl Xanthate (SEX) is one of most common flotation agents, and it decomposes to Ethanol and Carbon Disulfide / Carbonyl Sulfide, which must be monitored in indoor air in the enriching plant. Xanthate solution is stored in tanks, which need periodic cleaning due to sludge buildup as the chemical decomposes over time. Removing the sludge releases sulfur containing gases (CS2, COS) and the cleaning interval varies from 3 to 12 months. In the actual flotation process, workers involved in checking flows, the head tank or in adjusting and monitoring the pulp levels in the flotation process could be exposed to CS2. A portable FTIR multi-gas analyser provides accurate and reliable readings for CS2 and COS with simple calibration (zero calibration only) and straightforward operation. The standard configuration contains up to 25 gases, making the instrument a versatile tool for occupational health measurements involving various mining chemicals. Left and above Short term and periodical measurements can be carried out with the battery powered portable analyzer and wireless handheld computer in field conditions.

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carbon_sulfide_emissions_in_nickel_mining_operations-2

Water Carbon Dioxide Carbon Monoxide Sulfur Dioxide Carbonyl Sulfide Carbon Disulfide Nickel Carbonyl Gasmet Technologies Oy Helsinki, Finland TEL : +358 (9) 7590 0400 EMAIL : contact@gasmet. fi WEB : www.gasmet.fi Gasmet Technologies Inc North America TEL : +1 866 685-0050, EMAIL : [email protected] WEB : www. gasmet. com Compound name Other ranges and compounds available; please contact Gasmet Technologies for further details. Above: Typical FTIR sample spectrum showing Carbonyl Sulfide and Carbon Disulfide in air. Different gases are identified based on their peak position and shape, and the...

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