Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Process for producing iron ore concentrate through red mud suspension magnetization roasting-grinding separation
The invention relates to a process for producing iron ore concentrate by using red mud suspension magnetization roasting-grinding separation, which is used for producing iron ore concentrate by using iron-containing red mud, and comprises the following steps: drying the iron-containing red mud, proportioning the dried red mud and an additive, performing fine crushing and mixing, adding the mixed material into a suspension heating furnace, controlling the heating temperature to be 1000-1100 DEG C, and heating for 2-3 hours; the heated materials are added into a suspension reduction furnace, the reduction time is controlled to be 15-25 s, the reduction ending temperature is 800-900 DEG C, and the red mud can be fully magnetized. And finally cooling the high-temperature roasted material through an anaerobic cooling device and grinding the high-temperature roasted material through a wet-type ore grinding machine, and carrying out magnetic separation on the obtained ore pulp through a two-section magnetic separator to obtain iron ore concentrate with higher grade. According to the method for producing the iron ore concentrate from the red mud, the suspension heating and suspension reduction methods are adopted, the magnetizing roasting quality of the red mud can be improved while the disseminated particle size of the red mud is increased, and the purposes of improving the iron ore concentrate grade and the metal recovery rate are achieved.
本发明涉及一种赤泥悬浮磁化焙烧‑磨选生产铁精矿工艺，为利用含铁赤泥生产铁精矿，采取的生产工艺为：将含铁赤泥进行干燥，干燥赤泥与添加剂配料后进行细碎和混料，然后将混合物料加入到悬浮加热炉中，控制加热温度为1000‑1100℃，再将加热物料加入到悬浮还原炉中，控制还原时间15‑25s，还原终了温度800‑900℃，可使赤泥得到充分磁化。高温焙烧物料最后经无氧冷却装置冷却和湿式磨矿机磨矿后，得到的矿浆再经两段磁选机磁选后，可得到品位较高的铁精矿。本发明赤泥生产铁精矿采用悬浮加热和悬浮还原方法，可在赤泥嵌布粒度长大的同时，提高了赤泥的磁化焙烧质量，达到了提高铁精矿品位和金属回收率的目的。
Process for producing iron ore concentrate through red mud suspension magnetization roasting-grinding separation
The invention relates to a process for producing iron ore concentrate by using red mud suspension magnetization roasting-grinding separation, which is used for producing iron ore concentrate by using iron-containing red mud, and comprises the following steps: drying the iron-containing red mud, proportioning the dried red mud and an additive, performing fine crushing and mixing, adding the mixed material into a suspension heating furnace, controlling the heating temperature to be 1000-1100 DEG C, and heating for 2-3 hours; the heated materials are added into a suspension reduction furnace, the reduction time is controlled to be 15-25 s, the reduction ending temperature is 800-900 DEG C, and the red mud can be fully magnetized. And finally cooling the high-temperature roasted material through an anaerobic cooling device and grinding the high-temperature roasted material through a wet-type ore grinding machine, and carrying out magnetic separation on the obtained ore pulp through a two-section magnetic separator to obtain iron ore concentrate with higher grade. According to the method for producing the iron ore concentrate from the red mud, the suspension heating and suspension reduction methods are adopted, the magnetizing roasting quality of the red mud can be improved while the disseminated particle size of the red mud is increased, and the purposes of improving the iron ore concentrate grade and the metal recovery rate are achieved.
本发明涉及一种赤泥悬浮磁化焙烧‑磨选生产铁精矿工艺，为利用含铁赤泥生产铁精矿，采取的生产工艺为：将含铁赤泥进行干燥，干燥赤泥与添加剂配料后进行细碎和混料，然后将混合物料加入到悬浮加热炉中，控制加热温度为1000‑1100℃，再将加热物料加入到悬浮还原炉中，控制还原时间15‑25s，还原终了温度800‑900℃，可使赤泥得到充分磁化。高温焙烧物料最后经无氧冷却装置冷却和湿式磨矿机磨矿后，得到的矿浆再经两段磁选机磁选后，可得到品位较高的铁精矿。本发明赤泥生产铁精矿采用悬浮加热和悬浮还原方法，可在赤泥嵌布粒度长大的同时，提高了赤泥的磁化焙烧质量，达到了提高铁精矿品位和金属回收率的目的。
Process for producing iron ore concentrate through red mud suspension magnetization roasting-grinding separation
一种赤泥悬浮磁化焙烧-磨选生产铁精矿工艺
QUAN FANGMIN (Autor:in)
06.05.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C22B
PRODUCTION OR REFINING OF METALS
,
Gewinnen oder Feinen von Metallen
/
B03B
Nassaufbereitung von Feststoffen oder Aufbereitung mittels Luftsetzmaschinen oder Luftherden
,
SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
/
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
/
C04B
Kalk
,
LIME
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