Abstract: In the production of aluminum monochloride from alumina, bauxites, bauxitic clays and clays wherein the produced aluminum monochloride gas stream contains at least CO.sub.2 and Cl.sub.2 radical and this gas stream is initially passed through at least one bed of reducing agent selected from the group consisting of charcoal and devolatilized coke to convert the CO.sub.2 to CO; subsequently the gas stream now containing at least AlCl, CO and Cl.sub.2 radical is contacted with molten aluminum metal to convert the Cl.sub.2 radical to AlCl to produce a gas stream of which the major components are AlCl and CO substantially free of CO.sub.2 and Cl.sub.2 radical.

Abstract: In the production of aluminum monochloride from alumina, bauxites and clays wherein the produced aluminum monochloride gas stream contains at least CO.sub.2 and Cl.sub.2 and this gas stream is initially passed through at least one bed of reducing agent selected from the group consisting of charcoal and devolatilized coke to convert the CO.sub.2 to CO; subsequently the gas stream now containing at least AlCl, CO and Cl.sub.2 is contacted with molten aluminum metal to convert the Cl.sub.2 to AlCl to produce a gas stream of which the major components are AlCl and CO substantially free of CO.sub.2 and Cl.sub.2.

Abstract: At least a two stage chlorination system for the production of aluminum trichloride and aluminum monochloride wherein in the gas stream containing the highest percentages of aluminum chloride produced CO.sub.2 is present and the said gas stream is passed through a charcoal or devolatilized coke bed in a preferred temperature range of about 1000.degree. C. to 1600.degree. C. to convert the said CO.sub.2 to CO and cycling at least part of the said CO produced to at least the second chlorination stage.

Abstract: At least a two-stage chlorination system for the production of a substantially iron-free alumina-silica product from Bauxites and Clays wherein in a preferred embodiment of the invention the chlorination agent is selected from the group consisting of Cl.sub.2, HCl and COCl.sub.2 in the first chlorination stage and wherein in the second chlorination stage the chlorination agent is selected from the group consisting of AlCl.sub.3 and SiCl.sub.4.

Abstract: At least a single stage chlorination system for the production of a substantially iron-free alumina-silica product from Bauxites, Bauxitic Clays and Clays wherein at least one chlorination agent is selected from the group consisting of Cl.sub.2, HCl and COCl.sub.2 and at least one chlorination agent from the group consisting of AlCl.sub.3 and SiCl.sub.4.

Abstract: At least a single stage chlorination system for the production of a substantially iron-free alumina-silica product from Bauxites, Bauxitic Clays and Clays wherein at least one chlorination agent is selected from the group consisting of Cl.sub.2, COCl.sub.2, AlCl.sub.2, AlCl, SiCl.sub.4 and SiCl.sub.2 and wherein the said chlorination agent is a limited percentage of the total gas stream.

Abstract: A process for the upgrading of aluminum mineral bearing raw materials by using at least three beneficiation treatment stages consisting of dispersion of a pulp of the material in specific pH ranges, screening in specific mesh sizes, and using at least one stage of high intensity magnetic separation.

Abstract: A process for the removal of iron and titanium minerals from aluminum bearing materials in at least one chlorination stage by the use of an excess of aluminum trichloride as at least the major chlorinating agent for the contained iron and titanium minerals, condensing the excess aluminum trichloride to recover the aluminum trichloride in an impure form, and recycling the impure aluminum trichloride to the chlorination stage together with additional aluminum trichloride or starvation amounts of chlorine, or alternately additional amounts of aluminum trichloride and starvation amounts of chlorine.

Abstract: A process for the upgrading of aluminum mineral bearing raw materials by using at least three beneficiation treatment stages consisting of dispersion of a pulp of the material in specific pH ranges, screening in specific mesh sizes, and using at least one stage of high intensity magnetic separation.

Abstract: A process for the concentration of hydrated aluminum oxide minerals from raw materials by flotation alone or in combination with magnetic separation using a series of conditioning steps prior to flotation involving dispersion, precipitation and flocculation.

Abstract: A process for the concentration of hydrated aluminum oxide minerals from raw materials by flotation alone or in combination with magnetic separation using a series of conditioning steps prior to flotation involving dispersion, precipitation and flocculation.

Abstract: An inductive connector has two coils which are inductively coupled when the two parts of the connector are "connected." Associated with one of the parts is a third coil which is movable, normally automatically, into inductively coupled relationship with the other coil of that part when the parts are separated. An impedance is connected in circuit with the third coil, whereby impedance matching with a source connected to the aforesaid other coil of that part can be achieved when the parts are separated.

Abstract: A process for the concentration by flotation of gold, gold bearing minerals and uranium oxide minerals from ores and metallurgical plant products whereby a pulp of a ground ore is agitation conditioned in at least two agitation conditioning stages wherein in at least one stage the pH of the pulp is lowered with an acid agent to within the pH range of about 1.5 to 5.0, and wherein in at least one additional agitation conditioning stage the pH of the pulp is raised to within the pH range of about 6.0 to 11.0 and wherein in at least the last stage prior to flotation at least one collector selected from the group of sulfhydryl anionic collectors is present, and subsequently, the at least two stage agitation conditoned pulp is subjected to flotation to produce a flotation concentrate enriched in at least one of the mineral values from the group consisting of gold, gold bearing minerals and uranium minerals.