CN1073057C - 将含铁残渣转化为合成岩石的方法 - Google Patents

将含铁残渣转化为合成岩石的方法 Download PDF

Info

Publication number
CN1073057C
CN1073057C CN97198337A CN97198337A CN1073057C CN 1073057 C CN1073057 C CN 1073057C CN 97198337 A CN97198337 A CN 97198337A CN 97198337 A CN97198337 A CN 97198337A CN 1073057 C CN1073057 C CN 1073057C
Authority
CN
China
Prior art keywords
blast furnace
slag
iron content
furnace slag
content residue
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN97198337A
Other languages
English (en)
Other versions
CN1231652A (zh
Inventor
J·弗利根
A·范登布兰登
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Umicore NV SA
Original Assignee
Union Miniere NV SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Union Miniere NV SA filed Critical Union Miniere NV SA
Publication of CN1231652A publication Critical patent/CN1231652A/zh
Application granted granted Critical
Publication of CN1073057C publication Critical patent/CN1073057C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/08Slag cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02Agglomerated materials, e.g. artificial aggregates
    • C04B18/021Agglomerated materials, e.g. artificial aggregates agglomerated by a mineral binder, e.g. cement
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04Waste materials; Refuse
    • C04B18/14Waste materials; Refuse from metallurgical processes
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/18Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Civil Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Revetment (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Road Paving Structures (AREA)

Abstract

本发明涉及将来自有色金属工业过程的含铁残渣转化为合成岩石的方法,包括使1份湿残渣与至少0.1重量份碎高炉渣和至少0.1重量份碎转炉渣混合;向该混合物中加水,制得一种粘稠浆料;在保持湿润情况下,使该浆料硬化至制成的岩石可用于建筑目的。

Description

将含铁残渣转化为合成岩石的方法
本发明涉及将得自有色金属工业过程的含铁残渣转化为合成岩石的方法。
含铁残渣是有色金属工业特别是锌加工工业的一种典型副产物。事实上,熟知的锌生产技术包括硫酸锌溶液的电解。电解前必须从该溶液中除去的主要杂质之一是铁。为些目的,将铁从该溶液中沉淀并分离出去。分离去的残渣含有起始溶液中存在的大部分铁、大量的铅、砷、氧化硅和残余的锌。取决于分离前后的不同条件,残渣中的铁以黄钾铁矾、针铁矿、赤铁矿或磁铁矿的形式而获得。它们之中尤以黄钾铁矾和针铁矿无商业价值,并认为是有害废物。其废物处理的场址需慎重考虑,防止受浸出物的浸染。
有害工业废物的稳定和固化是一项受广泛关注的环境技术,在Chemtech的J.R.科纳“有害废物的稳定化”(1993.12)的第35-44页上有一般描述。很多无机的稳定和固化技术使用凝硬性反应,即,在波特兰水泥在CaO、Al2O3、SiO2、MgO和Fe2O3之间形成复杂的水硬性系统时发生的反应类型。
该技术在锌工业中的已知应用描述于EP-A-0031667。该文件具体涉及黄钾铁矾的处理,并提出一种通过与含钙水泥粉和氧化铝、氧化硅基粉(飞灰)相混合,使其固化的方法。其产品具有申请专利的压缩强度:28天固化后为0.64MNm-2,并显示低的浸出性。
然而,这种黄钾铁矾处理方法有如下缺点:
-得到的产品压缩强度较低,使之只适于垛放而不适于建筑工业;
-未提及重要的铅的浸出性问题;和
-使用大量波特兰水泥,使其经济性变差。
本发明的目的在于将得自有色金属工业的含铁残渣转化为合成岩石,这可避免EP-A-0031667中所公开方法的缺点。
为此,按本发明:
-使1份湿残渣与至少0.1重量份粉碎的高炉渣和至少0.1重量份粉碎的转炉渣相混合;
-让该粘糊在保湿下硬化,使得获得的岩石可用于建筑目的。
事实上已经发现,作为炼铁炼钢工业的副产品的高炉渣和转炉渣,当它们与含铁残渣混合时,可用作特别有效的凝硬反应剂:在硬化后可获得一种可与混凝土硬度相仿的高硬度;该产品还显示低的可浸出性、低孔隙度和好的抗冻性,使之适用于建筑目的。
无庸多言,钢铁工业的高炉渣和转炉渣均是极廉价的反应剂。事实上,转炉渣是无市场价值的废物,发现这些废渣的应用是对环境有额外的益处。
特别有兴趣的是铅的浸出性低,否则它会带来有害的环境问题,并抑制其作为建筑材料制品的应用。据信铅的不溶性是由于在高炉渣中硫化物的存在。因此申请专利保护的方法不仅使残渣得以色封,还实现了至少某些组分的化学结合。
这里应提及的是,在JP-02-233539-A中,由高炉渣与轧钢渣混合,再加入波特兰以形成一种渣块。在JP-52-058728-A中,由高炉渣或转炉渣与(a)一种高炉渣浆和碱性促进剂,和(b)一种工业废浆混合,可获得一种砂浆。另一方面,在DE-A-3915373中,由转炉渣与钢厂或电厂来的废物混合,获得道路建筑用的材料。在GB-A-2137186,由火山灰与高炉渣,以及与炼钢渣和一种填料一起混合,制成道路建筑材料。
例如针铁矿这样的残渣据认为是待认真水洗的,该步骤是锌处理流程的一个组成部分。水洗的目的在于回收残余的可溶锌。并将其循环至锌厂中。
残渣粉碎成小于500μm是有利的;优选小于250μm,更优选小于125μm。粗颗粒的反应性差,但也允许其与较细颗粒共存,因为它们会机械地嵌入产品中。
高炉渣一般含游离CaO的量较低,因为其中的Al2O3和SiO2的含量高,它们与CaO相结合是人所共知的。高炉渣中典型的浓度范围为(重量%):25-45SiO2、6-20Al2O3、0-5Fe、0-10MnO、30-50CaO、2-11MgO和0.1-5硫化物。
转炉渣由于Al2O3和SiO2含量较低,因而一般游离CaO含量较高,转炉渣内典型的浓度范围为(wt%):5-25SiO2、0-5Al2O3、5-25Fe、2-15MnO、30-60CaO和0-5MgO。
高炉渣和转炉渣的总量优选为每份湿残渣至少0.4份。当使用每份湿残渣至少0.2份高炉渣和至少0.2份转炉渣时,可得到优异结果。然而,当使用每份湿残渣至少0.4份高炉渣和至少0.4份转炉渣时,可得到最好的结果。
相对于每份湿残渣使用大于2份高炉渣和转炉渣是不可取的,因为这会增加进行本发明的方法所需设备的投资成本。相对于每份湿残渣使用不大于1份高炉渣和转炉渣甚至也是优选的,相对于每份湿残渣使用不大于0.8份高炉渣和转炉渣甚至更优选的。使用不大于1份高炉渣和转炉渣甚至也是优选的,相对于每份湿残渣使用不大于0.8份高炉渣和转炉渣甚至更优选的。
为了缩短固化时间,向该混合物中或向浆料中加入不多于0.1份水泥,尤其是波特兰水泥可能是有用的。
由本发明方法得到的合成岩石可被用于例如护栏的建筑中。它也可粉碎后用于生产卵石,可用于道路建筑,或用于建筑工业中生产混凝土。
在本发明方法的一个特定实施方案中,其浆料可让其部分硬化,然后再破碎为适当大小,如卵石大小,然后让其完全硬化。
该硬化优选在浆料浸在水下时进行。
本发明也涉及包含按本发明方法生产的合成岩石的建筑材料。
现在用下述实施例对本发明加以说明。
在实例中用的高炉渣是钢铁工业中常规产生的炉渣。所用的转炉渣是由Linz和Donawitz(LD)转炉过程生产的。这些实施例中,使用了符合表1分析结果的渣和符合表2分析结果的针铁矿。该针铁矿的水份含量为45%。
表1:渣分析
    组分     干重%
    高炉渣     转炉渣
    SiO2     30.4     13.3
    Al2O3     10     1.43
    Fe     2.3     18
    MnO     .18     3.8
    CaO     43     51
    MgO     9.29     1.7
    P2O5     <0.005     2.5
    S2-     1.1     0.06
表2:针铁矿分析
    组分     干重%
    Fe     37.4
    Pb     1.7
    Si     1.8
    Cu     0.5
    Cd     0.08
    As     0.5
    Zn     6.7
    SO4 2-     1.8
实施例1
相对于1份湿针铁矿,加入1重量份高炉渣和0.5重量份的转炉渣。将这些渣粉碎成150μm或小于150μm。将这些组分混合,加入适量水制成粘稠性浆料。使该浆料在水下硬化2个月。制成的产品既极硬又很惰性。其硬度和可浸出性结果总结于下表3。
实施例2
相对于1份湿针铁矿,加入0.5重量份高炉渣和0.75重量份的转炉渣。将这些渣粉碎成150μm或小于150μm。将这些组分混合,加入适量水制成粘稠性浆料。使该浆料在水下硬化2个月。制成的产品既极硬又很惰性。其硬度和可浸出性结果总结于下表3。
实施例3
相对于1份湿针铁矿,仅加入0.1重量份高炉渣和0.5重量份的转炉渣。将这些渣粉碎成150μm或小于150μm。将这些组分混合,加入适量水制成粘稠性浆料。使该浆料在水下硬化2个月。制成的产品较硬且完全惰性。该相对硬度使该产品仍然适用于建筑目的,例如道路建筑。其硬度和可浸出性结果总结于下表3。
表3:实施例1-3的结果
实施例号 硬度MNm-2                     可浸出性mg/L
 Zn  Pb  As  Cu  Cd  Fe
    1     40 <0.5 <0.2 <0.2 <0.2 <0.2     <1
    2     41 <0.5 <0.2 <0.2 <0.2 <0.2     <1
    3     25 <0.5 <0.2 <0.2 <0.2 <0.2     <1
上表中所报告的硬度是强制硬度(constrained hardness),可浸出性按DIN S4规范测量。

Claims (13)

1.将来自有色金属工业过程的含铁残渣转化为合成岩石的方法,其特征在于:
-水洗所述含铁残渣;
-将高炉渣和转炉渣粉碎至粒度小于500μm;
-使1份所述湿的含铁残渣与0.1-2重量份的所述粉碎的高炉渣和0.1-2重量份的所述粉碎的转炉渣混合;
-向该混合物中加水,制得一种粘稠浆料;
-在保持湿润情况下,使所述浆料硬化,得到合成岩石。
2.权利要求1的方法,其特征在于所述含铁残渣是针铁矿。
3.权利要求1的方法,其特征在于对于1份所述湿的含铁残渣,使用的所述粉碎的高炉渣和转炉渣的总量为0.4-2重量份。
4.权利要求1的方法,其特征在于对于1份所述湿的含铁残渣,使用的所述高炉渣和转炉渣的用量每一种各自为0.2-2重量份。
5.权利要求1的方法,其特征在于对于1份所述湿的含铁残渣,使用的所述高炉渣和转炉渣的用量各自为0.4-2重量份。
6.权利要求1的方法,其特征在于对于1份所述湿的含铁残渣,所述高炉渣和转炉渣的使用量各自为不超过1重量份。
7.权利要求1的方法,其特征在于对于1份所述湿的含铁残渣,所述高炉渣和转炉渣的使用量各自为不超过0.8重量份。
8.权利要求1的方法,其特征在于所述的高炉渣和转炉渣被粉碎到小于250μm。
9.权利要求1的方法,其特征在于所述的高炉渣和转炉渣被粉碎到小于125μm。
10.权利要求1的方法,其特征在于对于1份所述湿的含铁残渣,向该混合物或浆液中加入多至0.1份的水泥。
11.权利要求1-10之任一项的方法,其特征在于将所述合成的岩石破碎以生产卵石。
12.权利要求1-10之任一项的方法,其特征在于使所述浆料首先部分硬化,然后破碎至合适粒度,再使之完全硬化。
13.权利要求12的方法,其特征在于使所述浆料在保持浸于水下的同时硬化。
CN97198337A 1996-09-30 1997-09-22 将含铁残渣转化为合成岩石的方法 Expired - Fee Related CN1073057C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP96202728 1996-09-30
EP96202728.0 1996-09-30

Publications (2)

Publication Number Publication Date
CN1231652A CN1231652A (zh) 1999-10-13
CN1073057C true CN1073057C (zh) 2001-10-17

Family

ID=8224449

Family Applications (1)

Application Number Title Priority Date Filing Date
CN97198337A Expired - Fee Related CN1073057C (zh) 1996-09-30 1997-09-22 将含铁残渣转化为合成岩石的方法

Country Status (16)

Country Link
US (1) US6284038B1 (zh)
EP (1) EP0931031B1 (zh)
JP (1) JP4092667B2 (zh)
KR (1) KR100528539B1 (zh)
CN (1) CN1073057C (zh)
AR (1) AR010994A1 (zh)
AU (1) AU728319B2 (zh)
BR (1) BR9712153A (zh)
CA (1) CA2266011C (zh)
DE (1) DE69702533T2 (zh)
DZ (1) DZ2319A1 (zh)
ES (1) ES2150231T3 (zh)
NO (1) NO322979B1 (zh)
PE (1) PE36899A1 (zh)
WO (1) WO1998014410A1 (zh)
ZA (1) ZA978708B (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ296222B6 (cs) * 2001-02-26 2006-02-15 Adamec Zdenek Zpusob likvidace nebezpecného odpadu s obsahem tezkých kovu
AT5555U1 (de) * 2001-12-05 2002-08-26 Buzetzki Eduard Verfahren zur integrierten herstellung von putzen und mörtel sowie von kiesersatz
US7596376B2 (en) * 2005-02-18 2009-09-29 Cisco Technology, Inc. Methods, apparatuses and systems facilitating client handoffs in wireless network systems
GB2513417B (en) 2013-04-26 2015-04-29 Univ Coventry A cementitious mix formed from industrial waste materials
CN105236899B (zh) * 2015-09-25 2018-07-24 湖南省小尹无忌环境能源科技开发有限公司 一种电解锌酸浸渣资源化无害化利用方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5258727A (en) * 1975-11-05 1977-05-14 Thyssen Huette Ag Acidic cement
EP0031667A1 (en) * 1979-12-21 1981-07-08 Stablex A.G. Improvements in the treatment of hazardous waste
GB2137186A (en) * 1983-03-23 1984-10-03 British Steel Corp Cementitious Products for Road-Making
DE3915373A1 (de) * 1988-06-03 1989-12-14 Bauakademie Ddr Baustoff fuer verkehrsflaechen und gruendungen
JPH02233539A (ja) * 1989-03-06 1990-09-17 Kobe Steel Ltd スラグブロック

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5258728A (en) 1975-11-08 1977-05-14 Fudo Construction Co Method of manufacturing mortar
JPS5337195A (en) * 1976-09-17 1978-04-06 Nippon Jiriyoku Senkou Kk Treating process for blast furness slag
NL8802398A (nl) * 1988-09-29 1990-04-17 Pelt & Hooykaas Werkwijze voor het onschadelijk maken van giftig afval.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5258727A (en) * 1975-11-05 1977-05-14 Thyssen Huette Ag Acidic cement
EP0031667A1 (en) * 1979-12-21 1981-07-08 Stablex A.G. Improvements in the treatment of hazardous waste
GB2137186A (en) * 1983-03-23 1984-10-03 British Steel Corp Cementitious Products for Road-Making
DE3915373A1 (de) * 1988-06-03 1989-12-14 Bauakademie Ddr Baustoff fuer verkehrsflaechen und gruendungen
JPH02233539A (ja) * 1989-03-06 1990-09-17 Kobe Steel Ltd スラグブロック

Also Published As

Publication number Publication date
NO991536D0 (no) 1999-03-29
PE36899A1 (es) 1999-04-09
DZ2319A1 (fr) 2002-12-28
EP0931031A1 (en) 1999-07-28
KR100528539B1 (ko) 2005-11-15
JP4092667B2 (ja) 2008-05-28
AU728319B2 (en) 2001-01-04
AU5049398A (en) 1998-04-24
EP0931031B1 (en) 2000-07-12
CA2266011A1 (en) 1998-04-09
ES2150231T3 (es) 2000-11-16
BR9712153A (pt) 1999-08-31
NO322979B1 (no) 2006-12-18
CA2266011C (en) 2006-06-13
JP2001501160A (ja) 2001-01-30
WO1998014410A1 (en) 1998-04-09
US6284038B1 (en) 2001-09-04
CN1231652A (zh) 1999-10-13
KR20000048702A (ko) 2000-07-25
ZA978708B (en) 1998-09-10
AR010994A1 (es) 2000-08-02
DE69702533T2 (de) 2003-04-10
NO991536L (no) 1999-03-29
DE69702533D1 (de) 2000-08-17

Similar Documents

Publication Publication Date Title
CN1701047A (zh) 飞灰的处理方法
US3230103A (en) Non-plastic composition containing pozzolan, lime and blast furnace slag
KR100842769B1 (ko) 건축자재용 혼합골재 제조방법
EP0787041B1 (en) Treatment of waste material
CN1073057C (zh) 将含铁残渣转化为合成岩石的方法
DE102004043614A9 (de) Verfahren zum Herstellen eines hydraulischen Bindemittels, eines Bauelements, deren Verwendung sowie Vorrichtung dazu
DE69022089T2 (de) Verfahren zum Unlöslichmachen und zur Verdichtung von Flugasche aus Verbrennungsanlagen.
CN1903768A (zh) 复合水泥助磨剂及其生产方法
JPH0959050A (ja) セメント用混合材の製造方法
EP0055004B1 (en) Process for processing moist compositions containing pollution-causing substances and composition
EP0128966A1 (de) Verfahren zur Entsorgung von Industrieschlämmen
JP3366451B2 (ja) コンクリートの製造方法
JPH02160895A (ja) 地盤改良剤
EP1656221B1 (de) Deponie für die lagerung von stoffen oder verbundstoffen bzw. gemischen daraus, verfahren zu deren behandeln sowie vorrichtung dazu
KR0118631B1 (ko) 고강도의 경화제 조성물
JP4139371B2 (ja) 管工事布設用埋戻材の製造方法及び管工事布設用埋戻材
KR100237557B1 (ko) 폐기물을 이용한 시멘트 모르타르 조성물
JP4115885B2 (ja) 石膏廃材の再利用方法及び地盤改良材
KR100289944B1 (ko) 폐석분을 이용한 석분 경량벽돌
CN113185163A (zh) 一种通过锰铁矿尾泥制造复合矿物掺合料的方法
Weinheimer Evaluating importance of the physical and chemical properties of fly ash in creating commercial outlets for the material
MXPA99002835A (en) Process for the conversion of iron bearing residues into a synthetic rock
JPH0645491B2 (ja) 再生路盤材
JPS6366283A (ja) 電気炉ダストを原料とする地盤改良材
JPS59113085A (ja) 泥炭地盤の改良方法

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Yunnan copper fine arts Zinc Alloy Co., Ltd.

Assignor: Grace & Company (UMICORE)

Contract fulfillment period: Contract performance period from January 16, 2006 to January 15, 2016

Contract record no.: Contract filing No. 061000030042

Denomination of invention: The invention relates to a method for converting iron containing residues into synthetic rock

Granted publication date: 20011017

License type: License type general permission

Record date: 20060523

LIC Patent licence contract for exploitation submitted for record

Free format text: COMMON LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2006.1.16 TO 2016.1.15

Name of requester: YUNNAN PROV UMICORE COPPER ZINC ALLOY CO., LTD.

Effective date: 20060523

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20011017

Termination date: 20091022