A scum formed on the surface of molten copper.

An inorganic pigment that is the reaction product of high temperature calcination in which boron oxide, calcium oxide, lead (II) oxide, and silicon oxide in varying amounts are homogeneously and ionically interdiffused to form a crystalline matrix of spinel.

Roaster hearth cleanings or barrings from lead refining. Consist primarily of cadmium, thallium and lead and oxides of cadmium, thallium, calcium and arsenic.

Sinter formed by heating finely divided lead concentrates and fluxes to a softening condition to agglomerate without fusion.

The residue obtained from leaching of a lead concentrate or ore to remove some of the soluble elements such as arsenic or iron. Composed primarily of lead but also containing other non-ferrous metals and gangue constituents.

Product obtained and separated during the melting of nickel and other non-ferrous metals containing raw materials. Consists primarily of antimonides and arsenides of copper and nickel.

Product generated from the wet cleaning of off-gases from the zinc/lead blast furnace. Consists primarily of zinc and lead in metallic or oxide form with varying amounts of other elements and compounds.

Substance formed by processing of chiefly oxidic material with lead and zinc content in a rotating furnace. Consists primarily of Al2O3, CaO, Fe, FeO and SiO2 with other nonferrous compounds as well as carbon.

Substance resulting from the electrolytic refining of lead obtained from primary and secondary sources and including recycled plant intermediates. Composed primarily of lead, antimony and precious metals and may contain other residual non-ferrous metals and their compounds.

A scum formed on the surface of molten lead-base alloys. Includes those cases in which aluminum is used to remove arsenic, nickel and antimony.

Residues from processing equipment used in a lead refinery. Consist primarily of lead and lead oxide.

This substance is identified in the Colour Index by Colour Index Constitution Number, C.I. 77588.

Residues from treating lead refinery ores and residues containing precious metals with sodium boroplumbate followed by thermal fusion.

Substance formed by the oxidative leaching of lead- and copper-containing materials with sulfuric acid. Consists primarily of lead sulfates and other lead compounds with lesser amounts of other non-ferrous compounds.

Substance resulting from the smelting of lead and its alloys obtained from primary and secondary sources and including recycled plant intermediates. Composed primarily of iron and lead (mainly in sulfide form) and may contain other residual non-ferrous metals and their compounds.

This substance is identified in the Colour Index by Colour Index Constitution Number, C.I. 77603.

Crusts formed on the surface of cooling molten lead during the desilverizing of lead.

Gold and silver bullion.

The product obtained by the purification of copper-lead ore concentrate roasting offgas. Composed primarily of arsenic oxide (As2O3).

Frit is a mixture of inorganic chemical substances produced by rapidly quenching a molten, complex combination of materials, confining the chemical substances thus manufactured as nonmigratory components of glassy solid flakes or granules. This category includes all of the chemical substances specified below when they are intentionally manufactured in the production of frit. The primary members of this category are oxides of some or all of the elements listed below. Fluorides of these elements may also be included in combination with these primary substances.@Aluminum@Manganese@Antimony@Molybdenum@Arsenic@Neodymium@Barium@Nickel@Bismuth@Niobium@Boron@Phosphorus@Cadmium@Potassium@Calcium@Silicon@Cerium@Silver@Chromium@Sodium@Cobalt@Strontium@Copper@Tin@Gold@Titanium@Iron@Tungsten@Lanthanum@Vanadium@Lead@Zinc@Lithium@Zirconium@Magnesium

Product of treating molten lead with sodium salts. Consists primarily of sodium-tellurium salts in various states of oxidation.

Slag formed as the feed progresses through the blast furnace in lead smelting. Consists primarily of metallic elements and oxides of calcium, magnesium and silicon.

By-product from the smelting of lead ores, scrap lead or lead smelter dross. Consists primarily of oxides and silicates of antimony and lead.

A cadmium-indium-enriched product obtained from the recirculation of copper-lead blast furnace flue dusts. Composed primarily of cadmium, indium and lead.

A matte obtained from reduction of copper electrolysis sludge from which selenium has been removed with coal. Composed primarily of copper, lead and tellurium.

Oxidation product of metals in lead refinery retort. Consists primarily of oxides of lead, antimony and zinc.

The slag or residue obtained when lead/silver anodes used in the electrolytic production of zinc are recast. Fusion of the alloys of lead and silver (manganese may also be present) and simultaneous oxidation occur.

Substance produced as a by-product of lead smelting operations. Consists primarily of copper sulfide with significant amounts of lead sulfide and precious metals.

Residues from leaching slag from a lead refinery with caustic soda and sulfuric acid. Consists primarily of sodium sulfate, tellurium compounds and lead sulfate.

Residue produced in lead smelting operations from the volatillsation of lead from materials smelted. Consists primarily of chlorides and oxides of antimony, arsenic and zinc.

Residue obtained in the metallurgical treatment of lead concentrate in a lead blast furnace. The substance is composed of cadmium oxides, lead oxides, and impurities containing compounds of arsenic, chlorine, indium and tellurium.

Material obtained during waste water treatment in lead production. Consists primarily of lead with additional metal carbonates, hydroxides, sulfides or sulfates.

The product obtained by the purification of copper ore concentrate roasting offgas. Composed primarily of lead, mercury and selenium.

Insoluble substance obtained during dissolution of zinc ores or concentrate in sulfuric acid for the production of zinc sulfate solutions after physical separation such as flotation and filtration.

By-product of refining of zinc ores consisting primarily of zinc, lead and iron.

An inorganic pigment that is the reaction product of high temperature calcination in which lead (II) oxide, silicon oxide, tin (IV) oxide, and zinc oxide in varying amounts are homogeneously and ionically interdiffused to form a crystalline matrix of spinel.

A thermally agglomerated substance formed by heating a mixture of metal sulfide concentrates, limestone, sand, furnace dross, miscellaneous zinc, lead and copper bearing materials, together with already roasted material to a temperature of 1000°C to 1200°C (538°F to 649°F).

A scum formed on the surface of antimonial lead. Consists primarily of sodium arsenate and sodium antimonate with some lead oxide and free caustic soda.

The residues obtained by the addition of aluminum or zinc to end liquors obtained from secondary refining of gold, iridium, osmium, palladium, platinum, rhenium, ruthenium or silver. Composed primarily of the precious metals, ammonium chloride and chlorides of aluminum, magnesium and zinc.

Product of neutralizing lead refining wastes to precipitate heavy metals.

This substance is identified in the Colour Index by Colour Index Constitution Number, C.I. 77601.

Oxides formed during melting, refining, and casting of solders. Major constituents are oxides of tin, lead and antimony; minor constituents are iron, nickel, sulfur, arsenic, copper and silver.

By-product of the refining of bismuth. Principally lead chloride with salts and compounds of various metals.

Residue from treatment of calcined zinc ore concentrates with antimony trioxide, zinc dust, lead oxide and copper sulfate. Consists primarily of zinc and a composite of metallics: cobalt, copper and lead.

A scum formed on the surface of molten lead during the process of removing bismuth by the addition of calcium and magnesium. It consists of lead containing calcium and magnesium bismuthides.

Substance resulting from the smelting of lead and its alloys obtained from primary and secondary sources and including recycled plant intermediates. Composed primarily of arsenic, lead and iron and may contain other residual non-ferrous metals and their compounds.

Material obtained during the recycling of exhausted lead storage batteries. Consists primarily of oxides and sulfates of lead and lead alloys.

By-product of refining lead ores obtained from baghouse and electro-static precipitator and as slurry from scrubbers.

This substance is identified in the Colour Index by Colour Index Constitution Number, C.I. 77605.

Inorganic slags produced from treatment of calcined scrap metals and oxides with borax, litharge and sodium carbonate followed by fusion.

Volatilized metals generated during smelting and refining of tin-lead alloys. Consists primarily of oxides of lead and tin.

The residue obtained from the treatment of lead with acetic acid. Composed primarily of elemental lead, lead acetate and basic lead carbonate hydroxide.

A product obtained by the treatment of battery scraps to recover lead. Composed primarily of oxides and sulfates of antimony and lead.

Product of hydrolysis and neutralisation of zinc/lead smelter waste waters. Consists primarily of cadmium hydroxide, calcium sulfate, calcium sulfite, iron hydroxide, lead hydroxide and zinc hydroxide.

Salt extract from the treatment of speiss refining residue with aqua regia followed by alkali fusion. Consists of precious metals and their salts.

The off-gases from the zinc/lead blast furnace. Consists primarily of carbon monoxide, carbon dioxide and nitrogen.

A scum or slag formed on the surface of molten lead during the process of removing antimony along with arsenic by oxidation with air. It consists of antimony, arsenic and lead oxides.