NANIWA ROKI CO., LTD
Osaka, JP
NANIWA ROKI CO., LTD Patent applications | ||
Patent application number | Title | Published |
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20130195712 | METHOD FOR REMOVING IMPURITIES IN MOLTEN CAST IRON, AND CAST IRON RAW MATERIAL - There is provided a method for obtaining a pure melt in which the impurities Mn, Al, Ti, Pb, Zn, and B are removed from molten cast iron and depletion of useful C and Si is suppressed, the method wherein an excess oxygen flame having a theoretical combustion ratio of fuel and oxygen (amount of oxygen (volume)×5/amount of fuel (volume)) of 1 to 1.5 is directly exposed to the surface of pre-melted molten cast iron, the temperature of the molten cast iron is held at 1250° C. or more and less than 1500° C. while the melt surface is superheated and an acidic slag is brought into contact with the melt, and an oxygen-containing gas is injected into the interior of the molten cast iron. | 08-01-2013 |
20120168296 | BIOCOKES PRODUCING METHOD AND APPARATUS - A method of producing biocokes in which pulverized biomass is fed and pressed in a reaction container is provided, wherein the pulverized biomass in a substantially-packed state is pressure-formed while being heated in a temperature range and a pressure range to obtain a semi-carbonized solid matter or pre-semi-carbonized solid matter and then cooled to produce biocoke. The method may includes a filling step; a reaction step; heating the pulverized biomass by means of a heating device to the temperature range and keeping such state for a prescribed period of time to form a shaped matter of the pulverized biomass in the reaction container, and then cooling the shaped matter by switching from the heating device to a cooling device; and an ejecting step. | 07-05-2012 |