Berol Kemi Ab

Ab Carbogel

Modokemi Aktiebolag

Other

Karl M Hellsten

Mait M Mathiesen

Lars I Gillberg

Eva Margareta Martinsson

Gunvor B Karlsson

Anders W Klingberg

Birgit T Karlsson

Kerstin E Henriksson

Svante L Wahlen

Jan G Emanuelsson

Birgit Tora Karlsson

Lars A Waag

Axel I Thebrin

Nils G Cederqvist

Inger G Johansson

A process for producing a slurry of a pulverized carbonaceous material having a predetermined particle size distribution with a certain average particle size and a certain maximum particle size is described. The process, which includes a comminuting phase comprising at least two milling stages and combining the milled material with a carrier liquid to provide the slurry is characterized by the following steps: (a) that the carbonaceous material is milled in a first milling stage; (b) that the milled product from stage (a) is divided into coarse material having a particle size which at least is larger than the average particle size of the predetermined particle size distribution and into fine material having a particle size smaller than that of the coarse material; (c) that the coarse material from stage (b) is milled in at least one further milling stage to produce at least one further portion of fine material, the average particle size of which is smaller than the average particle size of the final slurry; and (d) that a slurry is produced of the combined portions of fine material from the different stages.

Process for producing a slurry of a pulverized carbonaceous material

Textiles are washed in a fluid dry cleaning composition in the form of a microemulsion of an aqueous phase in perchloroethylene, comprising as the principal ingredients:

Process for dry-cleaning textiles and microemulsion dry cleaning

An aqueous slurry of a solid fuel and a process for producing said slurry are described. The aqueous slurry consists of a highly concentrated slurry of a pulverized, carbonaceous material having a particle size of at most 0.5 mm, and 0.02-2% by weight of at least one additive. The solids content of the slurry is 65-90% by weight, preferably 70-80% by weight. The slurry is characterized in that the additive includes a water-soluble surface active compound which is an ethylene oxide adduct having the following formula:

Aqueous slurry of a solid fuel and a process for the production thereof

An aqueous slurry of a solid fuel and a process and a means for producing said slurry are described. The aqueous slurry comprises a highly concentrated slurry of a pulverized, carbonaceous material having a particle size of at most 0.5 mm, and 0.02-2% by weight of at least two surface active additives. The solids content of the slurry is 65-90% by weight, preferably 70-80% by weight. The slurry is characterized in that the surface active additives include, as a major part, a water-soluble nonionic surface active agent which is an alkylene oxide adduct with a hydrophobic part and a hydrophilic part, said hydrophilic part consisting of at least one polyalkylene oxide chain with a length of at least 40, preferably 50-150 ethylene oxide units; and, as a minor part, an ionic surface active agent. The ionic surface active agent preferably has the general formula: ##STR1## wherein R.sub.1 and R.sub.2 are hydrogen or an alkyl group with 1-22 carbon atoms, provided that the sum of the number of carbon atoms of R.sub.1 and R.sub.2 is at least 6, and Z.sub.1 designates the group --SO.sub.3 H, --CH.sub.2.sup.+ NHR.sub.3 R.sub.4 X.sup.- or --CH.sub.2.sup.+ NR.sub.3 R.sub.4 R.sub.5 X.sup.-, wherein R.sub.3, R.sub.4 and R.sub.5 are alkyl and/or hydroxyalkyl groups with 1-4 carbon atoms and X is an anion, and n is 40-200.

Aqueous slurry of a solid fuel and a process and means for the

A process for froth flotation of phosphate ore with a high content of carbonate, carried out in the presence of a hydrophilic polysaccharide and an amphoteric compound.

Process for froth flotation

A pumpable aqueous slurry of a solid fuel in the form of a pulverized, carbonaceous material and a process for the production of such slurry are described. The aqueous slurry comprises a component which consists of coarse grains of carbonaceous material having a particle size of up to 25 mm, and a further component which consists of a carrier liquid in which the coarse-grained carbonaceous material is suspended. The carrier liquid proper has a solids content of 65-90% by weight and consists of water and pulverized, carbonaceous material having a particle size of at most 0.5 mm, preferably at most 350 .mu.m, and 0.02-2% by weight of at least one additive including a water-soluble surface active compound which consists of an alkylene oxide adduct having a hydrophobic part and a hydrophilic part, said hydrophilic part consisting of a polyalkylene oxide chain, preferably a polyethylene oxide chain, having a length of 40-200 alkylene oxide units. The pumpable aqueous slurry is produced by first preparing the carrier liquid and then adding to said liquid 20-40% of the coarse-grained, carbonaceous material, based upon the total weight of the aqueous slurry. The aqueous slurry is intended primarily for pumping in pipelines.

Pumpable aqueous slurry of a solid fuel and a process for the production

The invention relates to new surface-active quaternary ammonium compounds having the general formula: ##STR1## wherein: R.sub.1 and R.sub.2 are each hydrocarbon groups having from about twelve to about forty carbon atoms;

Surface-active quaternary ammonium compounds for treatment of textiles

The present invention specifies an esterified dicarboxylic acid of the general formula ##STR1## in which R.sup.I is an aliphatic hydrocarbon group with 7-21 carbon atoms, R.sup.II is a hydrocarbon radical with 2-6 carbon atoms and A is an alkylene oxide group derived from an alkylene oxide with 2-4 carbon atoms. Particularly preferred are compounds in which A relates to a group derived from ethylene oxide and in which R.sup.II is --CH.dbd.CH-- or the phenylene group --C.sub.6 H.sub.4 --. The compound exhibits selective properties when used in the flotation of oxide and salt type minerals.

Esterified dicarboxylic acid and its use

During mechanical working, an aqueous lubricant composition is used as a lubricating and cooling agent, which contains an ether phosphate as a lubricating agent. A concentrate suitable for use as a lubricant after dilution with water is also described.

Method for the mechanical working of metals and lubricant concentrate

A process for the froth flotation of calcium phosphate-containing minerals is provided which comprises carrying out the flotation in the presence of an amphoteric flotation agent having the general formula: ##STR1## wherein: R is a hydrocarbon group having from about seven to about twenty-four carbon atoms;

Process for the froth flotation of calcium phosphate-containing minerals

Hydrocarbon oils containing 1 to 10% emulsified water are provided, having as the emulsifier:

Hydrocarbon oils containing 1 to 10 percent emulsified water and

A process is provided for the separation of nonfibrous material from mineral wool fibers which comprises dispersing the fibers in an aqueous solution comprising a surfactant having at least one hydrophobic group containing at least eight carbon atoms and at least one cationic hydrophilic group having at least one nitrogen or sulfur atom, such as a quaternary ammonium surfactant. The fibrous material is dispersible in the surfactant solution, while the nonfibrous material is not and consequently can be separated by centrifuging or settling and decantation.

Process for separating mineral wool fibers from nonfibrous materials

Quaternary ammonium compounds are provided which are useful in the treatment of substrates such as plastic materials and textile materials, both woven and nonwoven, from natural and synthetic fibers and mixtures thereof, to impart antistatic properties. A process is also provided for the preparation of such compounds, and for the treatment of substrates with such compounds.

Aqueous solutions of quaternary ammonium compounds

A detergent composition is provided having good cleaning effectiveness while simultaneously imparting to the material treated a soft feel and/or good conductivity for static electricity, and comprising a mixture of surfactants of which:

Detergent composition having textile softening and antistatic effect

A liquid aqueous detergent composition is provided which contains a surface active portion, and a complexing agent, as well as, if desired, other components customarily included in detergent compositions, characterized in that the surface active portion mainly contains

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Odsmal, Sweden

Karl M Hellsten