ALKALI METAL REMOVAL METHOD

To provide an alkali metal removal method that efficiently removes alkali metal from fly ash of woody biomass to effectively utilize the alkali metal as raw material for cement.SOLUTION: The present invention provides an alkali metal removal method that removes alkali metal from fly ash of burnt woo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HIRUMA YUSUKE, TATSUMI YOSHINORI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	DISPOSAL OF SOLID WASTE OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL,e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL PERFORMING OPERATIONS RECLAMATION OF CONTAMINED SOIL SOIL SEPARATING SOLIDS FROM SOLIDS SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, ORSIFTING OR BY USING GAS CURRENTS SORTING TRANSPORTING
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Beschreibung
Zusammenfassung:	To provide an alkali metal removal method that efficiently removes alkali metal from fly ash of woody biomass to effectively utilize the alkali metal as raw material for cement.SOLUTION: The present invention provides an alkali metal removal method that removes alkali metal from fly ash of burnt woody biomass, including the steps of (a) blending the fly ash with calcium source and chlorine source, temporarily or sequentially and (b) heating a mixture whose hydraulic modulus has been adjusted from the fly ash in the step (a) to give a heated product.SELECTED DRAWING: Figure 1 【課題】木質バイオマス灰の飛灰からアルカリ金属を効率的に除去してセメント原料として有効利用するための、アルカリ金属除去方法を提供する。【解決手段】本発明は、木質バイオマスの燃焼灰の飛灰からアルカリ金属を除去する方法であって、飛灰にカルシウム源及び塩素源を、一時に又は順次に混合する工程（ａ）と、工程（ａ）によって飛灰から水硬率が調整された状態の混合物を加熱して加熱処理物を得る工程（ｂ）とを含む。【選択図】図１