Phillips Petroleum Company

Kimble, Kenneth B.

Bresson, Clarence R.

Kenneth B Kimble

Clarence R Bresson

Harold W Mark

Gary D Macdonell

Harold Wayne Mark

A process for the recovery of minerals from an ore or concentrate containing the same wherein the minerals are recovered in a froth from an aqueous pulp containing the ore or concentrate and wherein one or more mineral flotation agents are employed in the aqueous pulp to control the type of minerals in the froth is provided. The mineral flotation agents used in carrying out the process comprise compounds formed by the addition of hydrogen sulfide to dicyclopentadiene. In one embodiment, the mineral flotation agents used in carrying out the process comprise tricyclodecenyl mercaptans having one or both of the following structures: ##STR1##

Ore flotation and mineral flotation agents for use therein

Tri-alkali metal di(carboxyalkyl) dithiocarbamates and triammonium-di(carboxyalkyl) dithiocarbamates which can be characterized by the formula ##STR1## wherein R and R' can be the same or different and are selected from the group consisting of alkylene radicals, preferably alkylene radicals each preferably having from 1 to 12 carbon atoms, and wherein M is selected from the group consisting of alkali metal atoms and ammonium; their use as ore flotation depressants; and a process for making these novel compositions are disclosed.

Ore flotation and tri-alkali metal-di(carboxyalkyl) dithiocarbamate and

Polyhydroxytrithiocarbonates can be used as depressants in ore flotation.

Trithiocarbonates as depressants in ore flotation

Process for the preparation of ore flotation collectors is disclosed comprising reacting an alkali metal salt of a 2-mercaptobenzimidazole with carbon disulfide. Also disclosed is process for recovery of minerals by flotation employing the novel ore flotation collectors prepared as described above.

Ore flotation agent from 2-mercaptobenzimidazole and flotation processes

Mercaptobenzothiazoles are usually employed together with hydrocarbyl trithiocarbonate in flotation processes for the recovery of copper values from an ore containing same.

Ore flotation

Tri-alkali metal-di(carboxyalkyl)dithiocarbamate and

S-Carboalkoxy-S'-alkyl trithiocarbonate, S-carboalkenoxy-S'-alkyl trithiocarbonate, S-carboalkenoxy-S'-alkenyl trithiocarbonate and S-carboalkoxy-S'-alkenyl trithiocarbonate, their use as flotation agents, and a process to make these novel compositions are disclosed.

Ore flotation and flotation agents for use therein

Carboxyalkyl dithiocarbamates which can be characterized by the formula ##STR1## wherein R is selected from the group consisting of alkylene radicals, preferably alkylene radicals each having from 1 to 4 carbon atoms, wherein R' is selected from the group consisting of hydrogen and methyl and ethyl radicals, and wherein X is selected from the group consisting of alkali metal atoms, their use as ore flotation suppressants, and a process for making these novel compositions are disclosed.

Alkali carboxyalkyl dithiocarbamates and use as ore flotation reagents

Carboxyalkyl dithiocarbamates which can be characterized by the formula ##STR1## wherein R is selected from the group consisting of alkylene radicals, wherein R' is selected from the group consisting of hydrogen and methyl and ethyl radicals, and wherein X is selected from the group consisting of alkali metal atoms, their use as ore flotation suppressants, and a process for making these novel compositions are disclosed.

Diammonium bis(carboxyalkyl)-trithiocarbonate salts, dialkali metal bis(carboxyalkyl)-trithiocarbonate salts, their use as flotation agents, and a process for the production of these novel compositions are disclosed.

Process for producing trithiocarbonic acid esters

S-carbalkoxy-S'-alkyl trithiocarbonate and n-dodecyl mercaptan are used for flotation of copper, nickel and iron-containing ores. S-carbalkoxy-S'-alkyl trithiocarbonate, n-dodecyl mercaptan and poly(propylene glycol) are used for the flotation of copper, nickel and iron-containing ores. Other ores are disclosed as being suitable for the flotation thereof with these novel compositions.

Growing community of inventors

Bartlesville, OK, United States of America

Kenneth B Kimble