Abstract: A process for biooxidation of sulfides in a heap of mineral ores by freeing precious metals dispersed or occluded within said ores as pyritic or arsenopyritic sulfides and the like; the process comprises forming particulates from ore particles with an inoculate comprising bacteria capable of attacking, by biooxidation, sulfides and/or elemental sulfur in said ore particles; from these particulates a heap is constructed; and the biooxidation takes place in such heap by adding to or dispersing within the heap a leaching solution, circulating the leaching solution within the heap and recovering the precious metal values from the heap; recovery may be accomplished with a cyanide, thiourea, or a thiosulfate lixiviant.

Abstract: A method is provided for the recovery of precious metal values, such as gold and silver, from refractory carbonaceous, or carbonaceous-sulfidic ore material. The ore material is inoculated using a specific microbial consortium and then incubated to deactivate the carbonaceous component of the material to prevent binding of the precious metal values to the carbonaceous component. The precious metal is then recovered.

Abstract: A gyratory mantle liner assembly for use in a gyratory crushing machine including a mainshaft to which is attached a retaining ring having a lip, a conical-shaped upper liner having a serrated and bevelled lower edge, a plurality of lower liner segments and having an upper bevelled edge arranged around the lower circumference of the mainshaft, and a retaining nut for tightening and applying constant force to the upper and lower liner segments to hold them securely against the mainshaft. The lower liner segments defining the crushing surface are generally made of heat treated alloy material.

Abstract: A nitrite-oxidized base lignosulfonate and a method of making the same; the method comprises providing a base lignosulfonate material and oxidizing it in the presence of sodium nitrite under alkaline conditions at a temperature greater than about 100.degree. C.; useful products of same are dispersants for dyes and dispersants for setting materials e.g. gypsum.

Abstract: A method for mechanically finishing parts having the step of agitating a plurality of parts to be finished in contact with a plurality of discrete substantially homogeneous compressed felt chunks having a particulate abrasive material coating thereon.

Abstract: An apparatus for color control of objects (11) has an approximately point-shaped light source in the form of a xenon flash lamp (16), which illuminates a specific, desired area through a diaphragm (17). Light reflected from the object is received by a detector unit (13) having three or more sensors (22) with their respective spectral sensitivities, which are positioned at such a great distance from the object that each receives substantially the same amount of light from all parts of the illuminated area. The detector signals are amplified by amplifiers adapted to filter all signals exhibiting another timewise variation than the light source, so that disturbing influence from the surroundings is avoided. The apparatus is simple and fast and is versatile in use.

Abstract: A method is provided for the recovery of precious metals, such as gold and silver, from refractory carbonaceous sulfidic material. The carbonaceous sulfidic material is ground and placed in heaps or piles or pulped or slurried and bioleached to oxidize the sulfide minerals using bacteria at temperatures from about 15.degree. C. and up to about 40.degree. C. The biooxidized residue is then treated using a specific microbial consortium, or a product of the microbial consortium, at temperature from about 5.degree. C. to 40.degree. C. to deactivate the carbonaceous component of the material to prevent binding of the precious metal to the carbonaceous component. The precious metal liberated in the residue remaining from the biological oxidation of sulfide and deactivation of carbon are recovered by dissolution.

Abstract: Recovery of a precious metal value from refractory carbonaceous and sulfidic ores, concentrates or tailings which also include arsenic-containing components is improved by roasting the ore or ore concentrate in an oxygen-enriched gaseous atmosphere having an initial oxygen content from about 25 percent (by volume) to about 65 percent (by volume) while maintaining a reaction temperature of less than about 600 degrees Celsius during the roasting and while maintaining a minimum amount of iron to react with arsenic and for forming ferricarsenate; thereafter recovering a thus-roasted ore as calcine, whereby the calcine is amenable to recovery of precious metal values in it; gold ores are preferred candidate ores.

Abstract: A palletizer or depalletizer of containers with a product carrier and product support having four pickup or deposit positions providing improved operational speeds and container placement precision. The ends of two air cylinders are slidably secured to at least one crank arm of a pivot shaft disposed in the carrier, actuation of the cylinders causing rotation of the shaft and the product support.

Abstract: A gyratory mantle liner assembly for use in a gyratory cone crushing machine; each assembly includes a retaining ring formed from high density steel having a conical lip on the edge surface thereof, a conical shape upper liner having arcuate teeth and a bevelled lower-end surface on the arcuate teeth formed from mild steel, a plurality of lower liner segments having an upper arcuate tooth surface with a bevelled edge and a seat, and a retaining nut for tightening and holding in position the upper and lower liner segments. The lower liner segments defining the crushing surface are made from heat treated alloy material and are arranged in a ring fashion on the bell skirt without the need for adhesives.

Abstract: A can dispenser bracket for use in a modular shelf display; each can dispenser bracket includes a recurvant guide for dispensing an individual can, planar side-end surfaces, an entrance opening, an exit opening, and a back-end surface having a metal bracket attached thereto. The can dispenser bracket may be mounted side-by-side in a modular shelf display which is particularly adapted to stores which have high shelf-space costs.

Abstract: An electrically powered pet door assembly for use in a home or building. Each assembly includes a frame which is secured to an exterior surface of a building, a panel slidably mounted within parallel tracks of the frame, a rotatable and translational drive assembly for vertically raising the panel, a centrifugal brake for controlling the speed of the vertical opening or closing of the panel and a treadle for activating the rotational and translational drive assembly.

Abstract: An apparatus and method for switching video signals from input lines to output lines. A control device selectively sets a blackout start time and a blackout stop time. A first comparator compares the blackout start time with actual time and a second comparator compares the blackout stop time with actual time. A switch is provided for connecting the input lines to output lines and for disconnecting the input lines from the output lines. The switch is responsive to the first comparator to disconnect all input lines from all output lines when the actual time equals the blackout start time. The switch is also responsive to the second comparator to reconnect the input lines to the output lines when the actual time equals the blackout stop time.

Abstract: The invention is directed to a composition and a method for preparing the same which composition inhibits or destroys unicellular living organisms. The composition is effective as a spermicide and also in combating sexually transmitted diseases and as an antiseptic agent. The composition of the invention comprises lithium and ionic or ionizable fluorine, for example, lithium fluoride. A suitable excipient such as KATHON may also be present. The invention may, for example, comprise lithium fluoride and a spermicidal agent, such as a quaternary ammonium compound, for example, benzalkonium chloride.

Abstract: A high speed labeling machine and method is provided for transferring labels to articles such as cans; the labeling machine includes a device for supplying articles to be labeled, a label transfer wheel provided with individual groups of closely spaced vacuum holddown ports to enable a succession of closely spaced labels to be supported by the transfer wheel and carried by the transfer wheel to the articles, and a pressure severing device for releasing the label from a carrier stock for subsequent transfer from a transfer wheel to the article to be labeled; sprocket holes are utilized to align very precisely a label; such labels may be die cut on the printing press and retained on the carrier by pinpoint attachments or they may be die cut as the label is advanced; in a preferred embodiment, single layer label tapes with release agent on one surface and a pressure sensitive adhesive on the other surface provide added advantages of smaller spool sizes and faster speeds; single layer label tapes also make tamper

Abstract: A feedstock containing a biomass such as lignocellulosic materials, e.g. forest biomass; agricultural residues; or manures, is pretreated and thereafter is fractionated into cellulose, lignin and hemicelluloses. New mutants are disclosed which include Chaetomium cellulolyticum IAF-101 (NRRL 18756), Aspergillus sp. IAF-201 (NRRL 18758), Penicillum sp. IAF-603 (NRRL 18759), and Trichoderma reesei QMY-1. With these new mutants and also known fungi including Pleurotus sajor-caju and other Pleurotus spp. unfractionated predetermined biomass is converted into feed. The same treatment can also be applied to hemicelluloses, and cellullose. Cellulose can also be hydrolyzed by means of a cellulase-system prepared from cellulose and Tricoderma reesei to prepare glucose which can be converted to alcohol with Saccharomyces cerevisiae, Kluyveromyces spp. and Zymomonas mobilis. The residual microbial biomass of these microorganisms from alcohol fermentation broth is also used as feed.