TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A solution in hydrometallurgical treatment from which all possible valuable constituents have been removed.  4, record 1, English, - barren%20leach%20solution

Record number: 1, Textual support number: 1 CONT

Heap leaching is often the most cost-effective way to extract value from gold or copper ores. Heap leaching involves placing ore-grade material on an impermeable liner foundation with a solution collection system of drainpipes and irrigating the surface with either cyanide solution(for gold) or acid(for copper). Within the heap, chemical reactions occur which liberate the payable metal from the rock. The resultant solution, called pregnant leach solution(PLS), reaches the liner and the collection pipes, and then reports to a storage facility(pond) for processing where the metal is removed, the solution conditioned, and re-applied to the HLP [heap leach pad] as barren leach solution(BLS).  1, record 1, English, - barren%20leach%20solution

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Dans un procédé de lixiviation, solution à partir de laquelle les métaux dissous ont été extraits.  2, record 1, French, - solution%20st%C3%A9rile

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

A chemical compound which appears under the form of colorless needles with a very pungent odor and an acrid taste, soluble in water, alcohol and ether, derived by heating a metal cyanide with iodine and used in taxidermists’ preservatives.  2, record 2, English, - iodine%20cyanide

Record number: 2, Textual support number: 1 OBS

Also known under the commercial designation Jodcyan.  2, record 2, English, - iodine%20cyanide

Record number: 2, Textual support number: 2 OBS

Chemical formula: CIN, CNI or ICN  2, record 2, English, - iodine%20cyanide

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Composé chimique se présentant sous la forme de cristaux blancs, d'odeur âcre, de masse moléculaire 152.94.  2, record 2, French, - cyanure%20d%27iode

Record number: 2, Textual support number: 1 OBS

Formule chimique : CIN, CNI ou ICN  2, record 2, French, - cyanure%20d%27iode

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

A chemical product which appears under the form of a colorless, nearly odorless, hygroscopic liquid whith a slightly bitter taste, which readily penetrates skin and other tissues, is combustible, is an extremely powerful aprotic solvent, is soluble in water, alcohol, benzene, acetone and chloroform, has a low toxicity, and is used as a solvent for polymerization and cyanide reactions, as an analytical reagent, in spinning polyacrylonitrile and other synthetic fibers, in industrial cleaners, in pesticides, in paint stripping, in hydraulic fluids, for the presentation of cells at low temperatures, in medicine as an anti-inflammatory and as a metal complexing agent.  8, record 3, English, - %28methylsulfinyl%29methane

Record number: 3, Textual support number: 1 OBS

(methylsulfinyl)methane: form recommended by the IUPAC (International Union of Pure and Applied Chemistry).  1, record 3, English, - %28methylsulfinyl%29methane

Record number: 3, Textual support number: 2 OBS

dimethyl sulfoxide: part of the Ingredient Disclosure List of the Hazardous Products Act (Registration SOR/88-64, December 31, 1987).  8, record 3, English, - %28methylsulfinyl%29methane

Record number: 3, Textual support number: 3 OBS

Also known under many trade names, such as: A 10846; Deltan; Demeso; Demasorb; Demavet; Demsodrox; Dermasorb; Dimexide; Dipirartril-Tropico; DMS-70; DMS-90; Dolicur; Doligur; Domoso; Dromisol; Durasorb; Gamasol 90; Hyadur; Infiltrina; M 176; NSC-763; Rimso-50; Somipront; SQ 9453; Syntexan and Topsym.  8, record 3, English, - %28methylsulfinyl%29methane

Record number: 3, Textual support number: 4 OBS

Chemical formula: (CH₃)₂SO or C₂H₆OS  8, record 3, English, - %28methylsulfinyl%29methane

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 OBS

(méthylsulfinyl)méthane : forme recommandée par l'UICPA (Union internationale de chimie pure et appliquée).  1, record 3, French, - %28m%C3%A9thylsulfinyl%29m%C3%A9thane

Record number: 3, Textual support number: 2 OBS

diméthyl sulfoxyde; diméthyl sulfinone : formes incorrectes; font partie de la Liste de divulgation des ingrédients de la Loi sur les produits dangereux (du Canada; enr. DORS s/88-64, 31 déc. 1987).  1, record 3, French, - %28m%C3%A9thylsulfinyl%29m%C3%A9thane

Record number: 3, Textual support number: 3 OBS

Formule chimique : (CH₃)₂SO ou C₂H₆OS  6, record 3, French, - %28m%C3%A9thylsulfinyl%29m%C3%A9thane

Record 3,  Textual support,  Spanish

Record number: 3, Textual support number: 1 DEF

Líquido incoloro, casi inodoro, de sabor amargo, miscible con agua. Penetra completamente en la piel y otros tejidos. Combustible. Tóxico por vía oral.  1, record 3, Spanish, - sulf%C3%B3xido%20de%20dimetilo

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

A metallurgical process in which the valuable contents of an ore are dissolved by acid or other solvents ...  4, record 4, English, - wet%20processing

Record number: 4, Textual support number: 1 CONT

Today in Nevada, the wet processing of precious metal ores uses a sodium cyanide solution that is placed on the heaps and allowed to percolate through the ore.  5, record 4, English, - wet%20processing

Record number: 4, Textual support number: 1 OBS

Opposite of "dry process."  4, record 4, English, - wet%20processing

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

[...] méthode d'extraction des métaux faisant appel à une dissolution.  5, record 4, French, - voie%20humide

Record number: 4, Textual support number: 1 CONT

L'élaboration du métal [...] utilise en général des procédés par voie sèche. Cependant, l'emploi de minerais de plus en plus pauvres peut nécessiter des procédés par voie humide.  6, record 4, French, - voie%20humide

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 OBS

Properties : White powder,... soluble in dilute mineral acids with production of hydrogen cyanide,... Use :Metal plating, chemical reagent, insecticide.  2, record 5, English, - zinc%20cyanide

Record number: 5, Textual support number: 2 OBS

Chemical formula: Zn(CN₂)  3, record 5, English, - zinc%20cyanide

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 OBS

Formule chimique : Zn(CN₂)  2, record 5, French, - cyanure%20de%20zinc

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

Pollution Prevention Opportunity Evaluation. Waste-generating Process: Metal Finishing - Surface Preparation. Opportunity: Reduce Rinsewater Use; Use of Rinsewater as Chemical Solution Make-up. ... The use water for rinsing can be reduced by several methods: ... A still rinse tank, also known as "dead rinse," "stagnant rinse," and "recovery rinse," can be used ahead of flowing rinses to concentrate the drag out in one tank and to reduce the amount of chemicals discharged to the sewer. The dead rinsewater can be used as make-up chemical solution.  2, record 6, English, - stagnant%20rinse

Record number: 6, Textual support number: 2 CONT

Installing an electrowinning unit on a stagnant rinse tank after a dragout recovery tank is the most common and costeffective application of electrowinning. To maintain a steady-state metal concentration in the stagnant rinse at or below the maximum contaminant concentration, the rate of metal deposition onto the electrowinning cathodes must be greater than or equal to the rate of dragin from the preceding tank. Thus, the metal deposition rate is an essential design parameter that ultimately affects the capacity, size and cost of the electrowinning unit.... Because metal and cyanide concentration in the stagnant rinse are lowered, subsequent rinses will be cleaner, allowing the flow rates in these rinses to be reduced or turned off. In many cases, rinse water flow is reduced to a rate equal to the evaporation rate from the stagnant rinse.  3, record 6, English, - stagnant%20rinse

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 DEF

Rinçage [...] en bain sans circulation.  3, record 6, French, - rin%C3%A7age%20mort

Record number: 6, Textual support number: 1 CONT

Rinçage statique ou rinçage mort. Propriétés : cuve sans alimentation continue en eau propre, vidanges périodiques, permet de réduire les pertes par entraînement.  2, record 6, French, - rin%C3%A7age%20mort

Record number: 6, Textual support number: 2 CONT

Les cuves de prérinçage. Avant le rinçage proprement dit, les pièces sont placées dans des cuves de rinçage statique («rinçage mort»).  4, record 6, French, - rin%C3%A7age%20mort

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

Cyanide toxicity is caused by the free cyanides (HCN and CN-) that inhibit cytochrome oxidase and thereby suppress aerobic respiration. Fish are the most susceptible organisms - sensitive species exhibit chronic and lethal effects at as low as 5-7 and 20-76 grams/liter, respectively. The toxicity of complex cyanides is usually, but not always, low, but the degradation products often include free cyanides which are toxic. Free cyanides readily degrade in the open environment but persist in groundwater. They do not bioaccumulate. Sublethal effects in fish include reduced reproductive capacity (decreased egg number and viability, and reduced embryo and larval survival), impaired swimming ability, altered growth, and hepatic necrosis. Free cyanides are phytotoxic at higher concentrations than those associated with adverse effects in fish.  2, record 7, English, - free%20cyanide

Record number: 7, Textual support number: 1 OBS

Refers often to "metal cyanide, "q. v.  3, record 7, English, - free%20cyanide

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 CONT

La sensibilité des organismes aquatiques est très variable vis à vis des différentes formes de cyanures, les doses toxiques variant de 0.01 à quelques mg/l. Une concentration en cyanure de sodium de 0.02mg/l est sans action visible sur les poissons. Cependant une concentration de 0.05 mg/l a une action mortelle sur une truite en cinq jours et une dose de 1 mg/l est mortelle en quelques heures. Cet exemple suffit à traduire la grande toxicité des cyanures libres vis à vis des poissons, mais aussi vis à vis des organismes inférieurs [...]  2, record 7, French, - cyanure%20libre

Record number: 7, Textual support number: 2 CONT

NF EN ISO 14403. - Qualité de l'eau. - Dosage des cyanures totaux et des cyanures libres par analyse en flux continu (indice de classement : T90-081).  3, record 7, French, - cyanure%20libre

Record number: 7, Textual support number: 3 CONT

[...] le traitement du minerai nécessite l'utilisation de divers réactifs organiques et inorganiques qui sont susceptibles de se retrouver dans l'effluent de l'usine de traitement du minerai et, par la suite, dans celui du parc à résidus. Ainsi, dans les effluents des usines de traitement de métaux précieux, des cyanures libres et des complexes cyanurés (cyanures métalliques) ainsi que des produits de leur dégradation, tels que l'ammoniac, sont parfois observés à l'exutoire du parc à résidus.  4, record 7, French, - cyanure%20libre

Record number: 7, Textual support number: 1 OBS

Nom souvent donné aux cyanures métalliques (voir aussi cette fiche).  5, record 7, French, - cyanure%20libre

Record 7,  Textual support,  Spanish

Record number: 7, Textual support number: 1 CONT

El cianuro es extremadamente tóxico tanto para peces como para la salud humana, pues los cianuros inhiben reversiblemente la oxidación de las enzimas, deprimiendo el contenido de oxígeno en los tejidos. La toxicidad del cianuro y sus compuestos, es decir cianuro libre, los complejos cianuro-metal y los derivados del cianuro encontrados en efluentes de explotaciones auríferas varían desde muy bajos a exageradamente altos, donde el compromiso e interacción con el medioambiente se ve afectado como resultado de la disociación de estos complejos con generación del ácido cianhídrico y no por el complejo de cianuro estable en sí mismo, sin embargo debemos citar que los complejos cianuros de cobre y de plata han demostrado ser agudamente tóxicos para los peces.  2, record 7, Spanish, - cianuro%20libre

Record number: 7, Textual support number: 2 CONT

Determinación de cianuro libre y total por Electrodo Ion Selectivo (EIS).  3, record 7, Spanish, - cianuro%20libre

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 CONT

Cyanides include metal cyanides such as KCN and NaCN, and complex salts of cyanides such as K₃Fe(CN) ₆ and K₄Fe(CN) ₆. Metal cyanides are called free cyanides [q. v. ] and are very toxic. Compared to these, the toxicity of complex salts of cyanides is very low. However, legal regulations are imposed on the total cyanides(CN-) concentration, the aggregate of metal cyanides and complex salts of cyanide.  3, record 8, English, - metallic%20cyanide

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 CONT

Les cyanures (CN-) sont des combinaisons de cyanogène-gaz composé d'azote et de carbone avec un corps simple, qui peut être la soude, le phosphate, les métaux. Il existe donc des cyanures de sodium, de potassium, des cyanures métalliques... Certains, les cyanures dits alcalins, sont très solubles dans l'eau. D'autres, les cyanures métalliques, sont insolubles dans l'eau, mais se dissolvent dans les premiers en faisant des «sels doubles».  3, record 8, French, - cyanure%20m%C3%A9tallique

Record number: 8, Textual support number: 1 OBS

Dans les dénominations de familles de composés, l'adjectif anglais «metallic» ou le terme anglais «metal» employé adjectivement se traduisent en français par «métallique» de préférence à «de métal». P. ex. : acétylures métalliques, azides métalliques, azotures métalliques, carbonoperoxoates métalliques, chlorures métalliques, cyanures métalliques, hydroxydes métalliques, hydrures métalliques, nitrates métalliques, sels métalliques, stéarates métalliques et sulfures métalliques (tournures plus naturelles que celles formées avec «de métal»). En revanche, lorsqu'il est nécessaire de préciser la nature du métal (métaux alcalins, métaux alcalino-terreux, métaux de transition, métaux des terres rares, métaux lourds, etc.), il est préférable, pour éviter toute ambiguïté, d'utiliser la locution «de métal». P. ex. : peroxydes de métaux de transition (et non «peroxydes métalliques de transition»), peroxydes de métaux alcalins (et non «peroxydes métalliques alcalins»).  2, record 8, French, - cyanure%20m%C3%A9tallique

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

Rock carrying copper mineral or minerals.  2, record 9, English, - copper%20ore

Record number: 9, Textual support number: 1 CONT

Hydrometallurgy... utilizes a chemical solvent to leach... the metal from the ore... For example, an aqueous solution of sodium or potassium cyanide might be used for some gold or silver ores, while an acid solution might be used for copper and zinc ores.  3, record 9, English, - copper%20ore

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 CONT

Le socle africain recèle des richesses considérables en minerai cuprifère.  1, record 9, French, - minerai%20cuprif%C3%A8re

Record number: 9, Textual support number: 2 CONT

L'Afrique semble riche en gisements platinifères, mais ne sont importants à l'heure actuelle que les placers d'Ethiopie, la récupération dans les minerais cuprifères du Congo et surtout l'exploitation des gisements [...] de dunites platinifères de la République Sud-Africaine [...]  2, record 9, French, - minerai%20cuprif%C3%A8re

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 CONT

Some materials can react vigorously with water to rapidly produce gases which are deadly at low airborne concentrations. For example, sodium or potassium phosphide release phosphine gas when they contact water. Alkali metal cyanide salts, such as sodium or potassium cyanide, slowly release deadly hydrogen cyanide gas on contact with water.  2, record 10, English, - cyanide%20gas

Record number: 10, Textual support number: 2 CONT

A respondent described the application of bioleaching in the mining industry and noted some of the cost issues and environmental precautions. ... For low-grade refractory gold ores, the technology involves bacterial breakdown of arsenopyrite ore to expose the gold followed by cyaniding for extraction purposes. A major environmental health issue here revolves on the control of acidity in the ore pile to eliminate the production of cyanide gas.  3, record 10, English, - cyanide%20gas

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 OBS

cyanure gazeux : Cette expression désigne le cyanure d'hydrogène (voir aussi cette fiche).  2, record 10, French, - cyanure%20gazeux

Record number: 10, Textual support number: 1 CONT

L'un des répondants à décrit l'application de la biolixiviation dans l'exploitation minière et donné des précisions sur certains des coûts et certaines des précautions d'intérêt environnemental. [...] Pour les minerais aurifères réfractaires à faible teneur en or, le procédé fait intervenir la décomposition bactérienne de l'arsénopyrite, ce qui expose l'or, puis l'extraction par cyanuration. À cet égard, un problème environnemental d'envergure se pose, car il faut neutraliser l'acidité du tas de minerai pour empêcher la production de cyanure gazeux, ce qu'on obtient en élevant le pH du minerai (à environ 10) avant de le cyanurer.  3, record 10, French, - cyanure%20gazeux

Record 10,  Textual support,  Spanish