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염화암모늄에 의한 함티탄자철광의 염소화반응(II)

Chlorination of Titaniferous Magnetite with Ammonium Chloride(II)

HWAHAK KONGHAK, April 1986, 24(2), 137-142(6), NONE
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Abstract

이 연구는 염화암모늄을 새로운 염소원으로서의 사용가능여부를 조사함과 아울러 함티탄자철광으로부터 인공 rutile의 제조를 위한 것으로서 이를 위해 NaOH에 의한 인공 ilmenite의 alkalifritting반응과 alkalifritting된 인공 ilmenite와 염화암모늄의 반응을 조사하였다.
Alkalifritting의 적당한 조건은 인공 ilmenite 1.0 g에 대해 NaOH의 무게비 1.0, fritting온도 800 ℃, fritting시간 1 h였으며 alkalifritting된 인공 ilmenite의 염소화의 적정조건은 인공 ilmenite에 대한 염화암모늄의 무게비 5.0, 반응온도 325 ℃, 반응시간 60 min, N2가스의 유량 30 cm3/min(반응관의 ID=2.8 cm)였다. 이 조건하에서 얻어진 최종잔사의 TiO2 품위는 85.11 %이며 X-선회절분석결과는 rutile의 회절선만을 나타내었다.
This study was carried out to find the possibility of NH4Cl being an alternative chlorine source and to produce synthetic rutile from titaniferous magnetite. The alkalifritting of synthetic ilmenite with NaOH and the chlorination of alkalifritted synthetic ilmenite with NH4Cl were experimentally investigated.
The proper conditions for the alkalifritting were NaOH weight ratio to synthetic ilmenite 1.0, fritting temperature 800 ℃ and fritting time 60 min. The optimum conditions for the chlorination of alkalifritted synthetic ilmenite were NH4Cl weight ratio to alkalifritted synthetic ilmenite 5.0, reaction temperature 325 ℃, reaction time 60 min and N2 flow rate 30 cm3/min(reactor size : ID=2.8 cm).
Under above mentioned conditions, content of TiO2 increased from 45.18 % to 85.11 % and the x-ray diffraction pattern of the residue left after water leaching showed only rutile.

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