Abstract: The present invention relates to a process and a facility for treating solid waste to recover recyclable materials and to form a compost from a biodegradable fraction within the solid waste. The process and facility lend themselves to efficiently recovering useful materials such as corrugated paper, ferrous metals, non-ferrous metals, plastic products, paper, and other redeemables such as glass containers. Various process steps are employed to recover these materials.

Abstract: A method and apparatus for adding minute quantities of radioactive material to frac material, acid material, cement squeezes, or the like, being pumped underground which includes providing a filler material or carrier having a minor portion of radioactive material distributed evenly therethrough, providing a lead shielded container having a variable volume chamber for the filler having the radioactive material and progressively decreasing the chamber volume at a predetermined rate to meter outflow of the filler with radioactive material from the container and into the line carrying the material being pumped underground. The rate of metering is such as to provide the desired concentration of radioactive material relative to the flow rate of material being pumped underground. The filler with the radioactive material is preferrably a solid plug and a grinder is used to progressively grind material at a selected rate from the leading end of the plug into particles of selected size.

Abstract: A method of producing a particulate sterile material insulation or fertilizer, includes the step of comminuting a cellulose feed material such as paper, in a hammer mill so as to produce fine particles and fibres having a large surface area to volume ratio. The particulate material is entrained in an air stream to produce separate particles of the material, and the particulate material freely falls through an ultraviolet radiation flux for a period of time sufficient to substantially completely sterilize the particulate material. The product can be used in animal breeding sheds as floor insulation. The used material with animal droppings can be similarly processed to produce a sterile particulate fertilizer ingredient.

Abstract: To recycle fluorescent and television tubes, the latter are introduced into a container which can be sealed in a gas-tight manner and crushed under water. In this process, the ascending gases released are drawn off under suction and fed in a compressed state to the reuse process, acid which dissolves or strips off the pollutants being added to the broken glass, which is coated with pollutants, the dissolved and stripped-off pollutants are flushed out of the broken glass, the metallic constituents are removed therefrom and then the broken glass is passed to the further utilization process. A precipitating agent is added to the liquid phase and the liquid phase is then filtered, the yttrium-containing filter cake being delivered to lanthanide manufacturers for further processing. The filtrate is fed back to the container in which the tubes are crushed.

Abstract: Low-dust, storage-stable granules are obtained in a continuous operating process in which the powder to be granulated is granulated in succession in a high-speed and low-speed mixing granulator, with the addition of a granulating liquid, and is then dried in a fluidized bed into which a liquid containing a binder is sprayed. The process is particularly suitable for the preparation of dyestuff granules which can easily be dispersed in the use medium.

Abstract: A method for separating mercurial waste from scrapped gas discharge lamp bulbs and other mercury-containing lamps. Expanded, broken lamps are crushed and conveyed to a vibrating screen. The crushed material is shaken on a sieve-cloth having a mesh width of 0.2-1.0 mm, preferably 0.25 mm, for at least 1-3 minutes. The major part of the crushed material remains on the screen and is removed therefrom as mercury-free waste (Hg-content<10 ppm), whereas substantially all the mercury present is found in the finer fraction which passes through the screen.

Abstract: The process for the manufacture of special aluminas from the powder produced in the calcination of alumina hydrate, as proposed by the invention, achieves the recovery of this by-product, treating it separatedly from the rest of the alumina, in order to convert it into special alumina of high calcination degree, or alpha alumina, being adequate for uses other than aluminum production. The process is carried out by submitting the by-product to a water-washing stage that reduces its sodium content, solid and liquid separation, filtering and drying. A drying operation is finally carried out with a calcination at a high temperature wherein the alumina of high calcination degree is transformed into alpha alumina.

Abstract: A rotary mill is provided with an improved loading means for charging material to the mill. The loading means is particularly adaptable for charging a batch-type rotary mill in a protective environment when, as part of a loading assembly of this invention, it is provided with removable plug and loading conduit members which can be interchanged without exposing the mill or charge material to air during the loading of the mill.

Abstract: A process and apparatus are disclosed for treatment of crystalline, particulate phthalocyanine pigments, and particularly for green shade phthalocyanine blue pigments. To effect development of the pigment tinctorial strength by reduction of the pigment particle size, the pigment particles are repeatedly impacted against relatively fixed impact plates by entrainment in moving air streams. Repeated impacting of the particulate pigment provides significant reduction in its particle size and significant development of the tinctorial strength of the pigment. It is presently preferred that the impacting steps be carried out in conjunction with subsequent viscous grinding of the partially developed pigment. This combination of treatment steps has been found to provide a resultant product of significantly enhanced tinctorial strength, while at the same time affording significant savings in materials, process time, and energy usage.

Abstract: There is provided a method wherein the source material, rubber or vulcanization products is pulverized in an extruder wherein it is first compressed by a force of 0.2 to 0.7 MPa, then subjected simultaneously to a pressure ranging from 0.2 to 50 MPa and a shear force ranging from 0.03 to 5 N/mm.sup.2 while heating the material to a temperature ranging from 80.degree. to 250.degree. C. and then cooling said material to a temperature ranging from 15.degree. to 60.degree. C. The source materials can be used rubber goods, such as used tires and rejects of tire industry, footwear and industrial rubber production.

Abstract: The invention is an improved system for separating waste products into several components and then providing for total utilization thereof. The systemitized arrangement integrates numerous automatic operations to produce the separation of the components and then provides for automatically directing the separated components to ultimate destinations for total utilization. The system first processes bulk waste products such as garbage, rubbish, and other discarded material and shreds it into small size particles. The shredded waste products are then mixed with sewage sludge received from another source. The mixture is then processed through a controlled sludge composting means. At this point a first benefit is derived by means of hot exhaust air from the controlled sludge composting means being directed to a hot house structure to aid in the growth of food products.

Abstract: This invention discloses a process and apparatus for purifying recovery glass for recycling and reuse. The necessity for manual sorting techniques is minimized due to the invention's unique process of mechanical purification, in parallel, carried out on separate granulometric portions of the recovery glass.

Abstract: An aluminosilicate ceramic product or article and a method of forming the article from as-mined ore. The product is useful as a proppant in gas and oil well fracturing. The ratio, on a calcined basis, of alumina to silica is between approximately 2.2 to 4.0. The amount of iron in the product is controlled as a function of the alumina to silica ratio so as to produce products having less than ten percent (10%) crush loss when subjected to a force of 10,000 psi.

Abstract: Admixture of unsaturated polyester and finely ground powder particles of soda-containing silicate glass, preferably soda-lime-silicate glass, e.g. below about 40 mesh and in an amount of between about 1 to 60% based on the weight of the polyester-glass particle admixture, providing improved properties in the ultimately cured resin at lower material costs and having special application as a composition for use in fabricating fibrous glass (i.e. fiber-glass) reinforced plastics composite products.

Abstract: The process and installation for carrying out the process of preparing starting materials to form a ceramic composition by passing them through a crusher, storing them in silos, until different proportions are fed to a mixer and then to an intermediate silo from which the materials are pulverized, dried cleaned of ferrous impurities and passed through a spray tower where recycled and starting material are mixed and moisture content controlled depending on whether the ceramic mass or composition to which the granulated material is to be processed must be suitable for casting, kneading or pressing.

Abstract: Chrome tanned leather scrap is converted into thermal insulation by shredding the tanned leather scrap into leather fibers, without damaging the structural fiber integrity, and case hardening the shredded leather fibers. The shredded leather fibers are case hardened by reducing the moisture content thereof to less than 5% by weight, and preferably less than 2%.

Abstract: A method of processing hydraulically mined ore slurries containing, in addition to the valuable ore, substantial quantities of contaminating argillaceous material and silica, involving initially separating the argillaceous material from the ore slurry while concomitantly concentrating said slurry to at least 65% solids content, depositing the wet concentrate thus formed on a continuous belt and conveying said wet concentrate via said belt to a beneficiation plant for further treatment.

Abstract: A base member having ground traction devices is connected by an elevation device to a vehicle frame. The vehicle frame supports a feeder portion that includes a fixed storage hopper. A power source for operating the ground traction devices is positioned forwardly of the feeder portion. At the discharging end portion of the feeder portion a pair of scrolls positioned in a trough feed the loose mined material into a breaker unit and therefrom onto a conveyor underlying the vehicle. A movable hopper is positioned for reciprocal longitudinal movement relative to the storage hopper by operation of a pair of piston cylinder assemblies. The movable hopper includes a hinged tailgate operable to move between an open position for loading the vehicle and a closed position for feeding the material to the breaker unit.

Abstract: A solid waste pollution control process for the dry recovery and restoration of 100% recycled paper pulp, machine cleaned confetti thrashed paper, fibrous fuels, plastic materials and construction aggregates from "solid municipal refuse", consisting of municipal household garbage, household yard trash, and commercial trash from supermarkets and retail establishments, condominiums, apartments, offices and warehouses. The solid municipal refuse is automatic machine sorted, machine chopped and thrashed and machine and air cleaned and is subjected to specific gravity and ballistics separation to recover the confetti thrashed paper while eliminating and rejecting from this confetti thrashed paper the loose, soft, decayed, wet and extraneous matter including high density particles and abrasive materials, such as metal particles, grit and glass such that this extraneous matter and materials are separated into fibrous fuels and construction aggregates.