Abstract:
In a process for granulating and disintegrating molten slags, in particular blast furnace slags, with water, a compressed water jet is directed into the slag and the slag is ejected as the jacket of the compressed water jet. The device for carrying out the process comprises a slag vessel for molten slag including an outlet opening for the molten slag, wherein a lance opens into the axis of the slag outlet opening such that the molten slag is ejected by compressed water or vapor introduced through the lance.
Abstract:
Particle compositions are described comprising certain metal halides in combination with a strengthening agent. The addition of the strengthening agent to a metal halide particle increases the particle's strength thereby reducing breakage on impact and during handling. When used as a vaporizable metal halide fill in discharge lamps, the particle strength is increased without significantly altering the spectral and electrical characteristics of the lamp. Methods of making the particles and arc tube containing the particles are also disclosed.
Abstract:
A process for forming solid particles comprising the steps of: combining in molten form a major component of a crystallizable condensation homopolymer and a minor component of a non-crystallizable condensation polymer, wherein the crystallizable condensation homopolymer and the non-crystallizable condensation polymer each have a degree of polymerization of 10 to less than 48 prior to the combining; mixing the combined crystallizable condensation homopolymer and non-crystallizable condensation polymer in molten form to form a mixture that comprises 10 to 30 mol % of the non-crystallizable condensation polymer; forming the mixture into droplets; exposing the droplets to a thermal environment which results in the bulk of the droplet reaching within 15 seconds a temperature within ±10° C. of the temperature at which the maximum rate of crystallization of the crystallizable condensation homopolymer occurs; and crystallizing at least a portion of the crystallizable condensation homopolymer in the mixture to form solid particles.
Abstract:
A process, and a suitable apparatus, for production of particles of a material in which stream of a dispersion of the material in a solvent and a stream of a compressible fluid antisolvent substance are mixed under conditions such that the substance is in compressible fluid antisolvent state. The mixture then flows along a conduit (17) toward an orifice (18), from which it flows into a downstream region in which the compressible fluid antisolvent substance decompresses and the material is isolated in a particulate state. Preferably the antisolvent substance is a supercritical fluid. The process and apparatus can generate a co-formulation of the material with additives which can be introduced in a suitable aqueous or solvent based carrier vehicle.
Abstract:
A method for obtaining urea prills in a prilling tower (1) comprising the step of making a plurality of melt urea droplets to fall from a urea melt distributing device (4) towards an urea prills collecting bottom (6) of the prilling tower, further comprises the step of cooling the collecting bottom (6).
Abstract:
The invention relates to a process and an apparatus for producing solid dosage forms by molding plastic active ingredient-containing mixtures with use of a continuously operating molding tool with two parts which cooperate to mold the plastic mixture, with at least one part having a plurality of depressions to receive and mold the plastic mixture, wherein one part has at least two groups, which differ in volume and/or shape, of depressions. Dosage forms which differ in shape or size are obtained in one step.
Abstract:
A process for producing solid dosage forms by forming a plastic mixture of at least one polymeric binder, at least one active ingredient and, where appropriate, conventional additives, and shaping the plastic mixture to the solid dosage forms using a mold, wherein an agent which modifies the surface properties is applied in finely divided form to the surface of the plastic, mixture during the shaping is described. The agent which modifies the surface properties is preferably a surfactant, a lipophilic compound, an antioxidant, a coloring agent or an agent with antistatic effect and/or lubricant effect.
Abstract:
A bi-chromal ball production apparatus and method where the bi-chromal ball material is fed from opposite sides of the disk, reconfiguring the internal geometry of the apparatus, and precisely configuring the bi-chromal ball material feeding slit. The bi-chromal ball production apparatus has a disk that rotates, a first supply structure that supplies a first bi-chromal ball material to the disk from a first direction, a second supply structure tube that supplies a second bi-chromal ball material to the disk from a second direction and a motor that rotates the disk. The bi-chromal ball production apparatus includes a first reservoir and a first slit defined by the disk and a top body, a second reservoir and a second slit defined by the disk and a bottom body. An inner surface of each of the first and second reservoir is parabola shaped.
Abstract:
The process comprises forming drops of a liquid to be configured, introducing said drops into a configurator liquid at high temperature in order to produce the coagulation of the drops and to obtain granules; to this effect, the jet of configuration liquid is subjected to the action of periodical pulses which are symmetrical to the axis of the effluent jet of configuration liquid thereby obtaining a controlled disintegration of the liquid into drops. The device for implementing such process includes a pulse chamber (2) with an elastic membrane (4) which produces pressure pulses to the liquid thereby disintegrating the liquid into drops (10) which fall into a receiver (12) and which, together with a configuration liquid flow, are introduced into a column (13) containing the configuration liquid at high temperature. The process and device enable to obtain granulated products such as caviar-like product, granulated meat products, chemical, pharmaceuticals and the like.
Abstract:
This invention describes a method of producing polymer powders from solution in a compatible solvent using a new device referred to as a microdroplets on demand generator (MODG). The embodiment of this invention is the MODG apparatus and its relevance as a method to extensive application in materials science and technology. Proof of concept is demonstrated using poly(ethylene) glycol polymer microparticles generated with the MODG and captured in a microparticle levitation device.