摘要:
In a method for producing a reactivity promoted carbonaceous solid reductant used for direct reduction of iron ore by means of an additional alkaline earth metal compound, and improved method wherein the improvement comprises grinding and mixing the carbonaceous solid reductant with the alkaline earth metal compound and agglomerating the resulting mixture to produce the reactivity promoted carbonaceous solid reductant of a definite grain size.
摘要:
A method for recovering zinc from substances containing a zinc compound which comprises supplying a carbonaceous substance and a zinc compound-containing substance onto the hearth layer in a sintering apparatus, vaporizing the zinc compound in said substance as metal to separate the compound therefrom by forming a locally strong reducing atmosphere at the combustion temperature of sintering material, oxidizing the resultant vapor-form zinc into zinc oxide under a strong oxidizing atmosphere, and then discharging the resultant zinc oxide as such from said sintering apparatus.
摘要:
A method for activating a petroleum coke which comprises impregnating the petroleum coke with an aqueous solution or suspension of an alkaline earth metal compound to contain 0.2% or more by weight of the alkaline earth metal compound in the coke.
摘要:
The present invention provides a thermally sensitive recording medium that possesses a thermally sensitive color developing layer containing colorless or pale colored basic leuco dye and an organic color developer as main components on a substrate, wherein said thermally sensitive recording medium contains at least one kind of an ultraviolet ray absorbent of aqueous emulsion type polymer composed of an emulsion copolymerized compound of (a) ultraviolet ray absorbing monomer, (b) vinyl compound monomer that can copolymerize with said monomer, (c) hydrophilic monomer and (d) reactive emulsifier.
摘要:
A transparent resin laminate comprising a polycarbonate resin base material, an acrylic resin layer comprising an ultraviolet absorbent coated on at least one surface of said polycarbonate resin base material and a cured layer formed by coating a composition comprising polyorganosiloxane and a silicone-containing polymer ultraviolet absorbent on said acrylic resin layer and then curing, wherein a difference of linear expansion coefficient between said polycarbonate resin base material and said acrylic resin layer and a difference of linear expansion coefficient between said acrylic resin layer and said cured layer are 0/° C. to 5×10−5/° C., respectively and a molded article used the same.