会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 57. 发明公开
    • PRODUCTION METHOD FOR HEMATITE FOR IRON PRODUCTION
    • HERSTELLUNGSVERFAHRENFÜRHÄMATITZUR EISENERZEUGUNG
    • EP3048083A4
    • 2017-08-02
    • EP14845100
    • 2014-09-04
    • SUMITOMO METAL MINING CO
    • SASAKI HIDEKIKAN YASUMASAMITSUI HIROYUKI
    • C01G49/06C22B1/02C22B3/04C22B3/44C22B23/00
    • C01G49/06C01P2006/80C22B23/043C22B23/0461Y02P10/212
    • Provided is a production method for refining iron oxide (hematite) having such a low sulfur content as to be used as a raw material for ironmaking from a leach residue containing iron oxide, the leach residue being produced by a high pressure acid leach (HPAL) process. The method is to produce (high-purity) hematite for ironmaking by a process of adding an oxidant and sulfuric acid to nickel oxide ore and then leaching nickel, the method further including: forming a neutralized residue having a sulfur grade exceeding 1.0% by weight by adding a neutralizing agent to leach slurry and being subjected to solid-liquid separation, the neutralizing agent serving to form plaster by reaction with a free sulfuric acid of surplus acid contained in the leach slurry, the leach slurry being a mixture of a leachate and a leach residue obtained after leaching the nickel; and heating the neutralized residue at a heating temperature of 600°C or more and 1400°C or less to form hematite having a sulfur grade of 1.0% or less by weight. Provided is a method of producing (high-purity) hematite for ironmaking by a process of adding an oxidant and sulfuric acid to nickel oxide ore and then leaching nickel, the method further including: forming a neutralized residue having a sulfur grade exceeding 1.0% by weight by adding a neutralizing agent to leach slurry and being subjected to solid-liquid separation, the neutralizing agent serving to form plaster by reaction with a free sulfuric acid of surplus acid contained in the leach slurry, the leach slurry being a mixture of a leachate and a leach residue obtained after leaching the nickel; and heating the neutralized residue at a heating temperature of 600°C or more and 1400°C or less to form hematite having a sulfur grade of 1.0% or less by weight. (128 words)
    • 本发明提供一种低硫含量的氧化铁(赤铁矿)的制造方法,该含氧量低的铁氧化物(赤铁矿)用于从含有氧化铁的浸出渣中作为炼铁原料使用,所述浸出渣由高压酸浸(HPAL) 处理。 该方法是通过向氧化镍矿石中加入氧化剂和硫酸然后浸出镍的方法生产用于炼铁的(高纯度)赤铁矿,所述方法还包括:形成硫级别超过1.0重量%的中和残余物 通过加入中和剂来浸出浆液并进行固液分离,中和剂通过与浸出浆液中所含的剩余酸的游离硫酸反应而形成石膏,浸出浆液是浸出液和浸提液的混合物 浸出镍后获得的浸出残渣; 在600℃以上且1400℃以下的加热温度下加热中和后的残渣,形成硫级为1.0重量%以下的赤铁矿。 本发明提供一种通过在氧化镍矿石中添加氧化剂和硫酸,然后浸出镍的方法来制造用于炼铁的(高纯度)赤铁矿的方法,所述方法还包括:通过以下步骤形成硫级别超过1.0%的中和残渣: 通过加入中和剂来浸出浆液并进行固液分离,所述中和剂通过与包含在浸出浆液中的剩余酸的游离硫酸反应而形成石膏,所述浸出浆液是浸出液 和浸出镍后获得的浸出残渣; 在600℃以上且1400℃以下的加热温度下加热中和后的残渣,形成硫级为1.0重量%以下的赤铁矿。 (128字)
    • 58. 发明公开
    • METHOD FOR RECOVERING RARE EARTH ELEMENT
    • VERFAHREN ZURRÜCKGEWINNUNGVON SELTENERDELEMENTEN
    • EP3124629A1
    • 2017-02-01
    • EP15770282.0
    • 2015-03-26
    • Hitachi Metals, Ltd.
    • HOSHI HiroyukiMIYAMOTO Yu
    • C22B59/00B09B3/00B09B5/00C22B1/02C22B7/00
    • C22B59/00B09B3/0083C22B1/02C22B7/001H01F41/0253Y02P10/214
    • An object of the present invention is to provide a method for recovering a rare earth element, including subjecting a workpiece containing at least a rare earth element and an iron group element to an oxidation treatment, then turning the treatment environment into an environment where carbon is present, and subjecting an oxidation-treated workpiece to a heat treatment, thereby separating a rare earth element in the form of an oxide from an iron group element, according to which an oxide of a rare earth element can be efficiently separated from an iron group element at low treatment cost, and also wear and damage to the treatment container can be suppressed to allow the container to be used repeatedly for a long period of time. The method of the present invention as a means for resolution is characterized in that the oxidation-treated workpiece is mixed with petroleum coke as a carbon supply source, placed in a treatment container, and then subjected to the heat treatment in an inert gas atmosphere or in vacuum at a temperature of 950°C to 1150°C (excluding 1150°C).
    • 本发明的目的是提供一种回收稀土元素的方法,包括使至少含有稀土元素和铁族元素的工件进行氧化处理,然后将处理环境转化为碳为 存在并对氧化处理的工件进行热处理,从而将氧化物形式的稀土元素与铁族元素分离,由此可以将稀土元素的氧化物与铁基团有效地分离 可以抑制处理容器的磨损和损坏,容许长时间反复使用。 本发明的分解方法的特征在于,氧化处理的工件与作为碳源的石油焦炭混合,放置在处理容器中,然后在惰性气体气氛中进行热处理 在950℃至1150℃的温度(不包括1150℃)的真空中进行。