Method for producing pellets from laterite-nickel ore
The invention belongs to production techniques of ferronickel, and particularly relates to a method for producing pellets from laterite-nickel ore, which comprises the following steps: proportioning: evenly mixing 1-4 wt% of bentonite, 1-8 wt% of quicklime and the balance of nickel oxide; pelletizin...
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Format | Patent |
Language | Chinese English |
Published |
12.09.2012
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Abstract | The invention belongs to production techniques of ferronickel, and particularly relates to a method for producing pellets from laterite-nickel ore, which comprises the following steps: proportioning: evenly mixing 1-4 wt% of bentonite, 1-8 wt% of quicklime and the balance of nickel oxide; pelletizing: adding water to the uniform mixture until the water content reaches 10-15%, and pelletizing by using a pelletizer; screening to remove raw materials of which the particle sizes are smaller than 10mm, thereby obtaining qualified raw pellets; and roasting to solidify, and cooling to obtain the nickel pellets. In the invention, the pellets are made into alkaline ore with a certain alkalinity, and the amount of coke is reduced in the blast-furnace smelting, thereby improving the physical properties of the blast-furnace smelted ferronickel; and in the ferronickel smelting process, the coke ratio is low, the yield is high, and the content of nickel in the smelted ferronickel is high. |
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AbstractList | The invention belongs to production techniques of ferronickel, and particularly relates to a method for producing pellets from laterite-nickel ore, which comprises the following steps: proportioning: evenly mixing 1-4 wt% of bentonite, 1-8 wt% of quicklime and the balance of nickel oxide; pelletizing: adding water to the uniform mixture until the water content reaches 10-15%, and pelletizing by using a pelletizer; screening to remove raw materials of which the particle sizes are smaller than 10mm, thereby obtaining qualified raw pellets; and roasting to solidify, and cooling to obtain the nickel pellets. In the invention, the pellets are made into alkaline ore with a certain alkalinity, and the amount of coke is reduced in the blast-furnace smelting, thereby improving the physical properties of the blast-furnace smelted ferronickel; and in the ferronickel smelting process, the coke ratio is low, the yield is high, and the content of nickel in the smelted ferronickel is high. |
Author | CHI YANBIN ZHANG CONGRONG YANG SHUANGPING DONG JIE WANG MIAO LI JIN WANG CHAO |
Author_xml | – fullname: DONG JIE – fullname: CHI YANBIN – fullname: WANG MIAO – fullname: LI JIN – fullname: WANG CHAO – fullname: ZHANG CONGRONG – fullname: YANG SHUANGPING |
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Snippet | The invention belongs to production techniques of ferronickel, and particularly relates to a method for producing pellets from laterite-nickel ore, which... |
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SubjectTerms | CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS |
Title | Method for producing pellets from laterite-nickel ore |
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