Lead basic

Lead The production of lead from lead sulphide minerals, principally galena, PbS, is considerably more complicated than the production of zinc because tire roasting of the sulphide to prepare the oxide for reduction produces PbO which is a relatively volatile oxide, and therefore the temperature of roasting is limited. The products of roasting also contain unoxidized galena as well as die oxide, some lead basic sulphate, and impurities such as zinc, iron, arsenic and antimony. [Pg.331]

Bischof An obsolete process for making white lead (basic lead carbonate), invented by G. Bischof around 1900. Lead monoxide was reduced by the carbon monoxide in water-gas to form black lead suboxide, oxidized in damp air to lead hydroxide, slurried in dilute acetic acid, and carbonated with carbon dioxide. Piloted in Willsden, London, and commercialized by L. Mond in the Brimsdown White Lead Company. A sample of Bischof s white lead was used by Holman Hunt in his painting Light of the World, now in St. Paul s Cathedral, London. [Pg.41]

Formula Pb(OH)2 2PbCOs MW 775.60 phase rule study indicates the existence of basic lead carbonates of other compositions SPbO SPbCOs PbO-PbCOs 2Pb0-PbC03 Synonyms white lead basic carbonate... [Pg.464]

Oxides of lead, basic lead stearate, lead-2-ethyl hexoate, basic lead salicylate Render the bum rate of DB rocket propellants independent of pressure over a certain pressure range [236]. Such salts are effective only with cooler propellants i.e., cal. val. below -850calgT... [Pg.281]

Many other ignition compns have been patented such as bis-triethyl lead styphnate, triethyl lead -basic lead styphnate, triethyl lead azide, mono -triethyl lead azo-aminotetrazole, bis-triethyl lead azoaminotetrazole, triethyl lead azidodithio-carbonate, diethyl lead diazide bis-basic diethyl lead styphnate, etc. The ignition compns mentioned above have an "overall lag of less than 0.0009 secs when fired at 12 amps, but in some cases this lag is even smaller, viz, 0.0002, 0.0003, 0.0004, 0.0005 or 0.0006secs... [Pg.187]

Sublimed white lead Basic lead sulfate Pb20(S04) Paint pigment (white)... [Pg.561]

Acme arsenate of lead (basic)a Pb5 OH9 (As04) 3 PBI/Gordon Corp., Acme Quality Paints 17.070 1.10352 2.38394... [Pg.295]

Arsenate of lead (basic) 0 Arsenious, arsenic oxide... [Pg.304]

USEPA (1995). Sampling House Dust for Lead Basic Concepts and Literature Review, Report No. 600-R-95-007, National Exposure Research Laboratory, Research Triangle Park, NC, USA. [Pg.126]

Characteristics Anatase Titanium dioxide Rutile Zinc oxide White lead Basic lead carbonate... [Pg.210]

Other white pigments. The range of available white pigment is wide and includes white lead (basic lead carbonate, 2PbC03 Pb(OH)2) lithopone (mixed ZnS/BaS04) zinc oxide (ZnO) antimony oxide (Sb203) and titanium dioxide (Ti02). [Pg.212]

Although several different approaches have been made to this problem in recent years, all lead basically to the same nucleation rate equation (Garside and Davey, 1980) and tend to justify the use of empirical scale-up rules for crystallizers such as keeping the specific power input constant (section 9.3.4). [Pg.416]

White lead basic lead carbonate 2PbC03 Pb(OH)2... [Pg.535]

White Lead. Basic lead carbonate, 2PbC03.Pb(0H)2. Used to some extent in USA as a glaze constituent. [Pg.355]

The current authors have not been able to find if styphnate salts other than lead, basic lead, and barium have ever been practically used. Information about silver and cupric salts is sparse. [Pg.152]

In order to guarantee an almost maintenance-free operation of lead-acid batteries, which requires low decomposition rates of water, the usage of materials with high values of hydrogen overvoltage is needed. While lead basically fulfills that requirement, antimony, which is used more or less as an alloying component in conventional lead-acid batteries, decreases the overvoltage extremely. [Pg.409]

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