High alkaline aluminium chloride and method for manufacturing the same

• Main Authors: KITAYAMA HIROAKI, FUJII YUSUKE
• Format: Patent
• Language: English; Korean
• Published: 03.04.2020
• Subjects: CHEMISTRY; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; INORGANIC CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The present invention relates to highly alkaline aluminum chloride having an alkalinity of 75-95%, and an agglomerating agent for water purification using the same. The present invention provides an agglomerating agent which can reduce residual Al, while decreasing the number of microparticles and E260 value. Particularly, the present invention provides highly alkaline aluminum chloride having a composition of M / Al_2O_3 (molar ratio) = 0.8-2.2, E / Al_2O_3 (molar ratio) = 0-0.3 (wherein E represents the mole number of an alkaline earth metal), Cl / Al_2O_3 (molar ratio) = 1.0-3.0, and SO_4 / Al_2O_3 (molar ratio) = 0-0.35, and an alkalinity of 75-95%. The present invention also provides a method for preparing the highly alkaline aluminum chloride, and an agglomerating agent composition for water treatment which includes the highly alkaline aluminum chloride at 8-12 wt% in water, as expressed by Al_2O_3. 염기도가 75%~95%인 고 염기성 염화알루미늄 및 그를 이용한 정수용 응집제를 제공하고, 잔존 Al의 저감과 동시에 미립자 수의 저감, E260 값의 저감도 가능한 응집제를 제공한다. 조성이 M/AlO(몰비) = 0.8~2.2(M은 알칼리 금속의 몰 수를 나타낸다), E/AlO(몰비) = 0~0.3(E는 알칼리토류 금속의 몰 수를 나타낸다), Cl/AlO(몰비) = 1.0~3.0, SO/AlO(몰비) = 0~0.35이며, 염기도가 75%~95%인 것을 특징으로 하는 고 염기성 염화알루미늄 및 그 제조 방법, 그리고 고 염기성 염화알루미늄을 물에 AlO환산으로 8중량%~12중량% 포함하는 것을 특징으로 하는 수처리용 응집제 조성물.