CN1871363B - 来自硫酸盐法的TiO2残渣的用途 - Google Patents

来自硫酸盐法的TiO2残渣的用途 Download PDF

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CN1871363B
CN1871363B CN200480022726.XA CN200480022726A CN1871363B CN 1871363 B CN1871363 B CN 1871363B CN 200480022726 A CN200480022726 A CN 200480022726A CN 1871363 B CN1871363 B CN 1871363B
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D·阿米尔扎德-阿斯尔
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    • C21B7/04—Blast furnaces with special refractories
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    • C21B—MANUFACTURE OF IRON OR STEEL
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    • C—CHEMISTRY; METALLURGY
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    • C21B7/04—Blast furnaces with special refractories
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    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/10—Obtaining titanium, zirconium or hafnium
    • C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
    • C22B34/1236—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching
    • C22B34/124—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching using acidic solutions or liquors
    • C22B34/125—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching using acidic solutions or liquors containing a sulfur ion as active agent
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    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
    • C—CHEMISTRY; METALLURGY
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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Abstract

本发明涉及来自硫酸盐法的TiO2残渣用于治金工艺中或者用作耐火材料的成分的用途。其中，无需将该TiO2残渣进一步与其他物质混合就进行干燥和添加。

Description

来自硫酸盐法的TiO2残渣的用途
本发明涉及来自硫酸盐法的TiO2残渣的用途。
TiO2产品的残渣(TiO2残渣)在冶金工业中的应用是已知的。DE 4419816 C1公开了一种含钛添加剂，由TiO2残渣和其他物质组成。DE 19705996 C2公开了一种含TiO2的添加剂的制备方法，是将TiO2残渣和铁或铁化合物的混合物在200-1300℃下进行热处理。但是缺点是TiO2残渣与添加剂的其他每一组分的计量和混合烦琐。
DE 19830102 C1公开了利用盐酸盐法制备TiO2时产生的含TiO2的细颗粒残渣的用途。但其缺点是按照硫酸盐法制备TiO2时，没有产生这种细颗粒状的含TiO2残渣，因此其不能用于来自硫酸盐法的TiO2残渣。
本发明的目的是克服现有技术的不足，尤其是提供一种按照硫酸盐法生产TiO2产品时TiO2残渣的简单应用。
本发明的目的是通过将硫酸盐法TiO2残渣应用于冶金工艺中或者用作为耐火材料的成分而实现的，其中TiO2残渣无需进一步与其他物质混合就进行热处理和添加。
令人惊奇地发现，由硫酸盐法获得的TiO2残渣用于治金工艺中或作为耐火材料的成分与迄今为止由TiO2残渣和其他物质的混合物具有同样的所需功效。该TiO2残渣在进行热处理时可以不进行洗涤或者进行洗涤和中和。
对TiO2残渣的热处理优选在100-1300℃下进行。TiO2残渣可以以粉末状或者有形体的形式存在(例如通过烧结、成球、压块或压制而获得)。
经热处理(干燥)的TiO2残渣优选含有下列物质作为主成分(数据按重量％给出)：
TiO2                 35-70
SiO2                 5-40
铁化合物              2-15
MgO                   1-15
CaO                   0.5-15
或者，经热处理(干燥)的TiO2残渣换算成氧化物具有下列主成分(数据按重量％给出)：
TiO2                 20-80
SiO2                 2-30
Al2O3               0-15
Fe2O3               0-15
MgO                   1-15
CaO                   0-15
在优选的应用中，将经热处理的TiO2残渣吹入冶炼炉例如高炉或电熔融炉或冲天炉中，从而提高了耐火炉衬的耐久性。其他的应用是将TiO2残渣用作堵口泥和耐火材料。
下面借助实施例详细说明本发明的主题。
实施例1：为用于冶炼炉中而进行的硫酸盐法TiO2残渣的处理
将100吨压滤卸料(洗选残渣)在进口温度为650℃的回转管式炉中进行处理，该压滤卸料在洗选硫酸盐法TiO2产品时产生，并具有75重量％的固含量和53重量％的TiO2(按固含量计)。获得的细颗粒产品的残余湿度为0.5重量％。该产品具有非常好的流动性(Rieself
Figure 10003_0
higkeit)并且可借助于气动输送很容易地吹入冶炼炉(这里是高炉)中。
该产品具有下列组成(按重量％计)：
TiO2                 53
Fe2O3               5.9
SiO2                 27.8
Al2O3               6.1
MgO                    2.4
CaO                    4.2。

Claims (7)

1.由硫酸盐法产生的TiO2残渣在冶金工艺中或者作为耐火材料成分的用途，其特征在于，该TiO2残渣无需进一步与其他物质混合就进行热处理和使用，其中该TiO2残渣按重量％计含有下列物质作为主成分：
TiO2                             35-70
SiO2                              5-40
铁化合物                          2-15
MgO                              1-15
CaO                              0.5-15。
2.由硫酸盐法产生的TiO2残渣在冶金工艺中或者作为耐火材料成分的用途，其特征在于，该TiO2残渣无需进一步与其他物质混合就进行热处理和使用，其中该TiO2残渣换算成氧化物按重量％计含有下列物质作为主成分：
TiO2                              20-80
SiO2                               2-30
Al2O3                              0-15
Fe2O3                              0-15
MgO                               1-15  
CaO                                0-15。
3.根据权利要求1或2的用途，其特征在于，TiO2残渣在100－1300℃下进行热处理。
4.根据权利要求1或2的用途，其特征在于，TiO2残渣以粉末状存在。
5.根据权利要求1或2的用途，其特征在于，TiO2残渣以有形体的形式存在。
6.根据权利要求1或2的用途，其特征在于，将经干燥的 TiO2残渣吹入冶炼炉中。
7.根据权利要求1或2的用途，其特征在于，将经干燥的 TiO2残渣用于堵口泥。
CN200480022726.XA 2003-08-09 2004-08-06 来自硫酸盐法的TiO2残渣的用途 Expired - Fee Related CN1871363B (zh)

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DE10336650.4 2003-08-09
DE2003136650 DE10336650A1 (de) 2003-08-09 2003-08-09 Verwendung von TiO2-Rückständen aus dem Sulfatverfahren
PCT/EP2004/008837 WO2005014867A2 (de) 2003-08-09 2004-08-06 Verwendung von tio2-rückständen aus dem sulfatverfahren

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CN101798234A (zh) * 2010-02-12 2010-08-11 闫晓峰 一种碳氮化钛高炉护炉剂及其制备方法
EP2444150A1 (de) * 2010-10-22 2012-04-25 crenox GmbH Trägerkatalysator aus Aufschlussrückständen der titanylsulfathaltigen Schwarzlösung
CN101988158B (zh) * 2010-12-07 2012-11-07 东北大学 一种含钛废渣的综合利用方法
CN102139424A (zh) * 2011-03-21 2011-08-03 北京工业大学 一种焊渣可循环利用的气保护药芯焊丝
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