METHOD OF UNBURNED CARBON REMOVAL FROM FLUE CINDER

• Main Authors: ABE KAZUO, KIMOTO KOSUKE, SAITO SINITIRO, MURATA TOSIAKI
• Format: Patent
• Language: English; Russian
• Published: 20.01.2009
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DIFFERENTIAL SEDIMENTATION; DISPOSAL OF SOLID WASTE; FLOTATION; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LIME, MAGNESIA; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS; METALLURGY; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINED SOIL SOIL; REFRACTORIES; SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; TREATMENT OF NATURAL STONE

FIELD: technological processes. ^ SUBSTANCE: invention concerns method of unburned carbon removal from flue cinder obtained at power stations using coal etc; and efficient use of flue cinder and removed unburned carbon. Method involves addition of water to flue cinder to form suspension, addition of collector. Obtained suspension with collector is fed to submerged mixer with rotation shaft passing inside cylindrical main case in its axis direction, multiple chambers formed by internal main case space division in direction of its axis, and stirring blade mounted on rotation shaft and performing rotation in each chamber. Shear force is applied to the suspension and collector. Foaming agent is added to suspension and collector exposed to shear force, and stirred to from air bubbles, enabling unburned carbon to adhere to air bubbles to elevate the said unburned carbon. ^ EFFECT: improved efficiency of unburned carbon removal from flue cinder. ^ 8 cl, 5 dwg, 2 ex