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2011-03-14_REVISION - M1977493 (57)
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2011-03-14_REVISION - M1977493 (57)
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Last modified
6/15/2021 5:47:17 PM
Creation date
4/6/2011 8:41:30 AM
Metadata
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Template:
DRMS Permit Index
Permit No
M1977493
IBM Index Class Name
REVISION
Doc Date
3/14/2011
Doc Name
Exhibit List, Ex. 1-6
From
Climax
To
MLRB
Type & Sequence
AM6
Media Type
D
Archive
No
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Permit Amendment (AM-06) - Climax Mine <br />CM0000479 <br />Frother <br />A frother reagent creates froth in the agitated reagent bath and assists in holding the froth intact at the <br />surface of the float cell. Nalco 9741 (or equivalent) will be utilized in the mill circuit as a flotation frother. <br />Nalco 9741 contains Aliphatic alcohol. Nalco 9741 is combustible. Primary exposure pathways include <br />eye contact, skin contact and inhalation. <br />In the environment, Nalco 9741 will distribute to air, water and soil/sediment in the approximate <br />respective percentages; <5%, 10-30% and 50-70%. Spills should be contained with inert absorbents, and <br />contaminated soils removed. <br />Emulsifying/Frothing Agent <br />Emulsifiers maintain the froth in the agitated reagent bath. Empicol, which may be sold under the brand <br />name Syntex, is a non-hazardous particulate surfactant similar to common soap that will be used in the <br />mill circuit as a frother/soap. In humans, it may lead to possible irritation of the gastrointestinal tract if <br />ingested in quantity. It is stable and non-hazardous in the environment. <br />Regrind Frother <br />Glycol Ether (or equivalent) will be used in the secondary mill regrind circuit as a flotation frother. It is <br />comprised of polypropylene glycol methyl ethers. Direct contact with this material may cause mild eye <br />and skin irritation. This product may be replaced with an equivalent product in the future. <br />This material may be a slight health hazard if ingested in large quantities. Glycol Ether is a stable product <br />that will mix 100 percent with water in the environment. It is an Occupational Safety and Health <br />Administration (OSHA) and National Fire Protection Agency (NFPA) Class IIIB combustible liquid. <br />Contaminated product, soil, or water may be hazardous waste due to potential combustibility. <br />Iron Depressant <br />Orfom D8 Depressant is a mineral processing aid that will be used in the mill circuit to maintain separation <br />and suppress iron and other metals in the flotation process. This is a corrosive material that causes <br />irreversible eye and skin damage. The vapor is combustible, and may cause respiratory tract irritation if <br />inhaled. The material can be harmful or fatal if swallowed. <br />If a spill occurs, evacuate the area and monitor with a combustible gas indicator. Spills should be <br />contained and cleaned up as soon as possible using appropriate techniques, such as applying non- <br />combustible sorbent materials or pumping. The material should be used and stored only in well ventilated <br />areas that are not near heat, sparks, or open flames. <br />Iron and Copper Depressant <br />Additional depressant products may be utilized at the site in the mill circuit. Sodium cyanide remains a <br />potentially important reagent that may be utilized in low doses in liquid form in the flotation mill circuit to <br />depress pyrite, chalcopyrite, iron, and copper. Although sodium cyanide (cyanide) is not currently utilized <br />at the site, it has been used in the past and may be used in the future. If used, it would be delivered and <br />stored in solid briquettes then mixed with water and caustic soda beads (NaOH) to maintain pH 11 for <br />safety. At acidic pHs, highly toxic hydrogen cyanide (HCN) gas develops. <br />Cyanide is a white solid with a faint almond odor that can affect the human body through inhalation, <br />ingestion, and dermal contact. Cyanide can rapidly cut the flow of oxygen from the blood stream to body <br />tissues. At lower levels of exposure, early symptoms include weakness, headache, confusion, nausea, <br />and vomiting. These symptoms may be followed by unconsciousness and death. Cyanide is rapidly <br />removed from the body by the liver and is neither bioaccumulative nor carcinogenic. Strong solutions of <br />cyanide salts are corrosive and may produce ulcers. <br />Cyanide is a naturally occurring compound that breaks down rapidly in the environment by exposure to <br />oxygen, ultraviolet (UV) radiation (sunlight), and naturally occurring bacteria. In surface waters, however, <br />cyanide can be detrimental because it is more toxic to aquatic life than to humans. Higher concentrations <br />in surface water ponds also can be toxic to terrestrial wildlife and migratory birds. <br />S <br />Exhibit T T-7 May 2010
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