CN100534945C - Chemical industrial gypsum building materials and preparation method thereof - Google Patents

Chemical industrial gypsum building materials and preparation method thereof Download PDF

Info

Publication number
CN100534945C
CN100534945C CNB2007100757666A CN200710075766A CN100534945C CN 100534945 C CN100534945 C CN 100534945C CN B2007100757666 A CNB2007100757666 A CN B2007100757666A CN 200710075766 A CN200710075766 A CN 200710075766A CN 100534945 C CN100534945 C CN 100534945C
Authority
CN
China
Prior art keywords
slag
building materials
chemical
gypsum
chemical industrial
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
CNB2007100757666A
Other languages
Chinese (zh)
Other versions
CN101139198A (en
Inventor
刘淑杰
周湧
武嘉
毛仲佳
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.)
Shenzhen Qing Yan Venture Capital Co., Ltd.
Original Assignee
Shenzhen Research Institute Tsinghua University
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 Shenzhen Research Institute Tsinghua University filed Critical Shenzhen Research Institute Tsinghua University
Priority to CNB2007100757666A priority Critical patent/CN100534945C/en
Publication of CN101139198A publication Critical patent/CN101139198A/en
Application granted granted Critical
Publication of CN100534945C publication Critical patent/CN100534945C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C04B28/14Compositions 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 calcium sulfate cements
    • C04B28/142Compositions 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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
    • 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

Abstract

The present invention relates to a chemical gesso building material, which consists of the following components according to weight ratio: 30-60 percent of waste gesso, 15-25 percent of powder coal; 20-30 percent of scoria and 5-20 percent of cement material. The chemical waste stone includes titanium gesso and phosphor gesso. The scoria includes titanium scoria, steel residue, water quenching residue and silicon powder stone. The chemical gesso also includes an assistant agent with the weight ratio of 0-5 percent. The preparation method for the chemical gesso building material includes the following steps: the raw materials are to be prepared according to the corresponding weight ratio for each component; the components are mixed and grinded to prepare the material slurry, and then is to be pressed into a mould; the mould is kept for more than 7 days. The present invention uses the chemical waste residue as the main materials and adopts simple process and equipments; without any calcining, the chemical gesso building products with much better physical force performance can be manufactured. The present invention is with much greater economical benefit and social benefit.

Description

Chemical industrial gypsum building materials and manufacture method thereof
Technical field
The present invention relates to building materials of gypsum, refer in particular to chemical industrial gypsum building materials and the manufacture method thereof of utilizing useless chemical gypsum to make.
Background technology
The existing building product that is used as non-bearing material of construction in the building generally adopts clay, is main raw material, makes finished product through technologies such as calcining, coolings; Owing to need a large amount of tonerdes, cause the waste in soil (arable land); And, because the calcining temperature height consumes higher heat energy, the product cost height.
Building materials of gypsum has obtained increasingly extensive application owing to performances such as having the humidity of adjusting, temperature.It is raw material that existing building materials of gypsum adopts plaster of paris ore, and makes the building materials process and operation, energy consumption height such as need calcine.And on the other hand, the waste residue that produces in the technologies such as a large amount of industrial residues, particularly Titanium White Production By Sulfuric Acid Process does not obtain utilizing, and difficult treatment is stacked and taken up an area of, and causes the pollution of environment.
Summary of the invention
Technical problem to be solved by this invention is: a kind of chemical industrial gypsum building materials is provided, and energy-conserving and environment-protective, and can effectively solve the environmental problem that the Chemical Manufacture waste residue brings.
The further technical problem to be solved of the present invention is: a kind of method of construction of chemical industrial gypsum building materials is provided, and it can effectively utilize the waste residue that produces in the Chemical Manufacture, and energy-conserving and environment-protective.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of chemical industrial gypsum building materials, and it comprises each component of following weight percent:
Waste gypsum 30~60%;
Flyash 15~25%;
Slag 20~30%;
Cement clinker 5~20%;
Wherein, described chemical waste gypsum is titanium gypsum or phosphogypsum; And this slag is a kind of in titanium ore slag, slag, Water Quenching Slag, the wollastonite.
Preferably, this chemical industrial gypsum building materials comprises each component of following weight percent:
Chemical waste gypsum 30~40%;
Flyash 16~22%;
Slag 20~30%;
Cement clinker 5~20%.
Preferably, this chemical industrial gypsum building materials comprises that further weight percent is 0~5% auxiliary agent, and this auxiliary agent is early strength water-reducing agent or exciting agent.
Preferably, the concrete composition of this auxiliary agent is selected from any one in the following reagent: Na 2SO 4, K 2SO 4, NaHSO 4, FeSO 4, lime, cement, NaOH, alkali blast furnace slag, calcined dolomite, bone.
Preferably, when this titanium gypsum is Titanium White Production By Sulfuric Acid Process, add a kind of mud shape waste residue that lime or carbide slag are produced with the neutralizing acid wastewater, free water content is not higher than 50%, CaSO 42H 2O is not less than 80%.
Preferably, this phosphogypsum is the solid slag that produces when producing phosphoric acid with sulfuric acid treating phosphorite in phophatic fertilizer production process, and its main component is a calcium sulfate.
Preferably, this chemical industrial gypsum building materials is standard solid block or hollow brick.
On the other hand, the present invention also provides following a kind of technical scheme:
A kind of chemical industrial gypsum building materials manufacture method comprises the steps:
A, prepare raw material according to following weight percent:
Chemical waste gypsum 30~60%
Flyash 15~25%
Slag 20~30%
Cement clinker 5~20%
Auxiliary agent 0~5%;
Wherein, described chemical waste gypsum is titanium gypsum or phosphogypsum; And this slag is a kind of in titanium ore slag, slag, Water Quenching Slag, the wollastonite; This auxiliary agent is early strength water-reducing agent or exciting agent;
B, above-mentioned each component mixed grind, make slip, compression moulding is again left standstill more than 7 days then.
The invention has the beneficial effects as follows:
1,, utilizing reluctant chemical industry waste residue without clay---waste gypsum and Producing Titanium Dioxide mine tailings, slag, Water Quenching Slag etc. turn waste into wealth as main raw material (accounting for about 80%), help the protection of environment, social benefit and remarkable in economical benefits;
2, production technique and equipment are simple, and without calcining, energy consumption reduces greatly, low production cost;
3, the building product physical and mechanical property is good, and good product quality can be widely used as non-lbearing wall material in the building.
Embodiment
The invention provides a kind of chemical industrial gypsum building materials, it comprises each component of following weight percent:
Chemical waste gypsum 30~60%;
Flyash 15~25%;
Slag 20~30%;
Cement clinker 5~20%;
Wherein, this chemical waste gypsum can be titanium gypsum, phosphogypsum etc.
This slag can be titanium ore slag, slag, Water Quenching Slag, wollastonite etc.
Preferably, chemical industrial gypsum building materials of the present invention, it comprises each component of following weight percent:
Chemical waste gypsum 30~40%;
Flyash 16~22%;
Slag 20~30%;
Cement clinker 5~20%.
Also can add the auxiliary agent that weight is no more than gross weight 5% as required and optionally in the chemical industrial gypsum building materials of the present invention, this auxiliary agent can be early strength water-reducing agent, exciting agent, and its concrete composition can be any one in the following all ingredients: Na 2SO 4, K 2SO 4, NaHSO 4, FeSO 4, lime, cement, NaOH, alkali blast furnace slag, calcined dolomite, bone.
The manufacture method of chemical industrial gypsum building materials of the present invention is as follows:
A, prepare raw material according to following weight percent:
Chemical waste gypsum 30~60%
Flyash 15~25%
Slag 20~30%
Cement clinker 5~20%
Auxiliary agent 0~5%;
B, above-mentioned each component mixed grind, make slip, compression moulding was again left standstill 7 days and 28 days then.
Chemical industrial gypsum building materials of the present invention is mainly as non-lbearing wall material in the building, for example: standard solid block or hollow brick, and because it need not pass through processing treatment such as calcining in production process, and environmental protection and energy saving more.
Below by several embodiment the present invention is further described:
Embodiment 1
A kind of chemical industrial gypsum building materials, composition (weight %) is: titanium gypsum 30%, flyash 16%, titanium mine tailing 30%, cement clinker 20%, early strength water-reducing agent 4.0%, above-mentioned each component mixing is ground, make slip, compression moulding was left standstill 7 days then.The Modular building building block outward appearance of making is neat, no bending or truncation arrisdefect, and ultimate compression strength mean value reaches more than the 15MPa, and minimum value reaches 12MPa; Drying shrinkage is less than 0.06%, and coefficient of softening is not less than 0.75, does not have radioactivity.
Embodiment 2
A kind of worker's building materials of gypsum, composition (weight %) is: titanium gypsum 60%, flyash 15%, titanium mine tailing 20%, cement clinker 5%, each component mixing is ground, make slip, compression moulding was left standstill 7 days then.The Modular building building block outward appearance of making is neat, no bending or truncation arrisdefect, and ultimate compression strength mean value reaches more than the 15MPa, and minimum value reaches 12MPa; Drying shrinkage is less than 0.06%, and coefficient of softening is not less than 0.75, does not have radioactivity.
Embodiment 3
A kind of worker's building materials of gypsum, composition (weight %) is: phosphogypsum 40%, flyash 25%, Water Quenching Slag 20%, cement clinker 10%, exciting agent 5% grind each component mixing, make slip, and compression moulding was left standstill 28 days then.The Modular building building block outward appearance of making is neat, no bending or truncation arrisdefect, and ultimate compression strength mean value reaches more than the 15MPa, and minimum value reaches 12MPa; Drying shrinkage is less than 0.06%, and coefficient of softening is not less than 0.75, does not have radioactivity.
Embodiment 4
A kind of worker's building materials of gypsum, composition (weight %) is: phosphogypsum 44%, flyash 25%, slag 25%, cement clinker 5%, exciting agent 1%, each component mixing is ground, make slip, compression moulding was left standstill 28 days then.The Modular building building block outward appearance of making is neat, no bending or truncation arrisdefect, and ultimate compression strength mean value reaches more than the 15MPa, and minimum value reaches 12MPa; Drying shrinkage is less than 0.06%, and coefficient of softening is not less than 0.75, does not have radioactivity.

Claims (8)

1, a kind of chemical industrial gypsum building materials is characterized in that, it comprises each feed composition of following weight percent:
Chemical waste gypsum 30~60%;
Flyash 15~25%;
Slag 20~30%;
Cement clinker 5~20%;
Wherein, described chemical waste gypsum is titanium gypsum or phosphogypsum; And this slag is a kind of in titanium ore slag, slag, Water Quenching Slag, the wollastonite.
2, chemical industrial gypsum building materials as claimed in claim 1 is characterized in that: this chemical industrial gypsum building materials comprises each feed composition of following weight percent:
Chemical waste gypsum 30~40%;
Flyash 16~22%;
Slag 20~30%;
Cement clinker 5~20%.
3, chemical industrial gypsum building materials as claimed in claim 1 or 2 is characterized in that: the raw material that this chemical industrial gypsum building materials adopts comprises further that also weight percent is 0~5% auxiliary agent, and this auxiliary agent is early strength water-reducing agent or exciting agent.
4, chemical industrial gypsum building materials as claimed in claim 3 is characterized in that: the concrete composition of this auxiliary agent is selected from any one in the following reagent: Na 2SO 4, K 2SO 4, NaHSO 4, FeSO 4, lime, cement, NaOH, alkali blast furnace slag, calcined dolomite, bone.
5, chemical industrial gypsum building materials as claimed in claim 1 is characterized in that: when this titanium gypsum is Titanium White Production By Sulfuric Acid Process, add a kind of mud shape waste residue that lime or carbide slag are produced with the neutralizing acid wastewater, free water content is not higher than 50%, CaSO 42H 2O is not less than 80%.
6, chemical industrial gypsum building materials as claimed in claim 1 is characterized in that: this phosphogypsum is the solid slag that produces when producing phosphoric acid with sulfuric acid treating phosphorite in phophatic fertilizer production process, and its main component is a calcium sulfate.
7, chemical industrial gypsum building materials as claimed in claim 1 is characterized in that: this chemical industrial gypsum building materials is standard solid block or hollow brick.
8, a kind of chemical industrial gypsum building materials manufacture method is characterized in that comprising the steps:
A, prepare raw material according to following weight percent:
Chemical waste gypsum 30~60%
Flyash 15~25%
Slag 20~30%
Cement clinker 5~20%
Auxiliary agent 0~5%;
Wherein, described chemical waste gypsum is titanium gypsum or phosphogypsum; And this slag is a kind of in titanium ore slag, slag, Water Quenching Slag, the wollastonite; This auxiliary agent is early strength water-reducing agent or exciting agent;
B, above-mentioned each component mixed grind, make slip, compression moulding is again left standstill more than 7 days then.
CNB2007100757666A 2007-08-15 2007-08-15 Chemical industrial gypsum building materials and preparation method thereof Expired - Fee Related CN100534945C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2007100757666A CN100534945C (en) 2007-08-15 2007-08-15 Chemical industrial gypsum building materials and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2007100757666A CN100534945C (en) 2007-08-15 2007-08-15 Chemical industrial gypsum building materials and preparation method thereof

Publications (2)

Publication Number Publication Date
CN101139198A CN101139198A (en) 2008-03-12
CN100534945C true CN100534945C (en) 2009-09-02

Family

ID=39191332

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2007100757666A Expired - Fee Related CN100534945C (en) 2007-08-15 2007-08-15 Chemical industrial gypsum building materials and preparation method thereof

Country Status (1)

Country Link
CN (1) CN100534945C (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101445355B (en) * 2008-12-23 2012-01-11 张勇飞 Construction material produced by utilizing industrial residue
CN101643334B (en) * 2008-12-31 2012-04-25 田文利 Strong wall block adhesive and manufacture method thereof as well as wall block and manufacture method thereof
CN101492274B (en) * 2009-03-12 2012-02-01 济南高新区工业废弃物利用研发中心 Titanium gypsum dry mixed mortar
CN101812300B (en) * 2010-04-16 2013-03-13 田文利 Soil and rock curing agent and manufacturing method thereof and road structure and manufacturing method thereof
CN102275970A (en) * 2011-05-20 2011-12-14 攀枝花市微创科技开发有限公司 Comprehensive utilization method of titanium white waste acid and wastewater
CN102491717B (en) * 2011-11-21 2013-06-12 武汉理工大学 Gypsum-base concrete with performances of sugaring resistance and carbonization resistance, and preparation method thereof
CN102617095B (en) * 2011-11-29 2014-04-09 武汉地铁集团有限公司 Cement-free anti-water dispersion and anti-water corrosion synchronous grouting material and its preparation method
CN102491712A (en) * 2011-12-09 2012-06-13 韶关市柏林再生资源开发有限公司 Steel slag brick prepared from steel slag and coal ash which serve as main raw materials and method for preparing steel slag brick
CN102701699A (en) * 2012-06-25 2012-10-03 武汉广厦龙源墙体材料有限公司 Desulfurization gypsum mold box and preparation method thereof
CN103771735B (en) * 2012-10-19 2016-03-30 中国石油化工股份有限公司 White lime process polyolefin catalyst titanium-containing waste residues is utilized to prepare the method for cement
CN103771736B (en) * 2012-10-19 2015-09-16 中国石油化工股份有限公司 Polyolefin catalyst titanium-containing waste residues prepares the method for cement with solidifying rigid material
CN103043985B (en) * 2013-01-13 2015-03-04 济南大学 Titanium gypsum composite binding material and preparation method thereof
CN103467056B (en) * 2013-09-13 2014-06-18 郑蓓蓓 Titanium gypsum foamed building block and preparation method thereof
CN103951298B (en) * 2014-04-24 2015-10-07 三峡大学 A kind of preparation method of titanium gypsum base composite gelled material and the application in dewatered sludge
CN104478388B (en) * 2014-12-25 2016-11-09 长沙海弘建材有限公司 A kind of titanium gypsum brick free of calcining and steam curing and preparation method thereof
CN104761230A (en) * 2015-03-20 2015-07-08 溧阳市同鑫新材料科技有限公司 Low-quality industrial byproduct gypsum resource utilization method
CN104944817A (en) * 2015-06-03 2015-09-30 攀枝花学院 Recycling method of sulfate process titanium dioxide by-product titanium gypsum
CN105399390A (en) * 2015-11-27 2016-03-16 武汉青江化工黄冈有限公司 Method for preparing gypsum binder from titanium gypsum
CN105399391A (en) * 2015-11-27 2016-03-16 武汉青江化工黄冈有限公司 Method for preparing gypsum plaster from titanium gypsum
CN105461965A (en) * 2015-11-30 2016-04-06 马鞍山泓宇材料科技有限公司 Preparation method of inorganic filler used in production of wood-plastic material
CN105418051A (en) * 2015-12-09 2016-03-23 佛山君帝环保科技有限公司 Environment-friendly building material
CN106278100A (en) * 2016-08-17 2017-01-04 盐城工学院 A kind of slag is utilized to carry out the toughness reinforcing method of gypsum increasing and goods thereof
CN107777985A (en) * 2016-08-31 2018-03-09 武春洋 A kind of industrial residue phosphogypsum building block and preparation method thereof
CN107777960A (en) * 2016-08-31 2018-03-09 武春洋 A kind of industrial residue titanium gypsum building block and preparation method thereof
CN106587671A (en) * 2016-12-23 2017-04-26 盐城工学院 Cementing material prepared from oil-bearing sludge, preparation method and application of cementing material and cement prepared from cementing material
CN106698988B (en) * 2016-12-29 2020-09-08 吉林建筑大学 Carbonate rock modified phosphogypsum and preparation method thereof
CN106830724A (en) * 2016-12-30 2017-06-13 安徽省高迪环保股份有限公司 Retarder and exciting agent that natural dihydrate gypsum makees cement are substituted after phosphogypsum modification
CN106946537B (en) * 2017-02-07 2019-09-10 马鞍山十七冶工程科技有限责任公司 A kind of titanium gypsum high performance concrete building materials and preparation method thereof
CN108314397A (en) * 2018-02-13 2018-07-24 上海朗创实业发展有限公司 A kind of titanium gypsum materials for wall and preparation method thereof

Also Published As

Publication number Publication date
CN101139198A (en) 2008-03-12

Similar Documents

Publication Publication Date Title
CN100534945C (en) Chemical industrial gypsum building materials and preparation method thereof
CN102173736B (en) Ceramic material for floor tile and preparation method thereof
CN101671133B (en) Modified low-alkalinity sulphoaluminate cement
CN100475736C (en) High-strength waterproof gypsum brick and method for preparing same
CN100506738C (en) Concrete composition containing ultra-fine carbonate rock powder and preparation method thereof
CN103641392B (en) A kind of formula of environmental protection brick and production method thereof
CN104496246A (en) Cement concrete building solid phase filler surfactant and manufacturing and use methods thereof
CN101265067A (en) Water-resisting high-strength gypsum-base concrete brick or building block, and producing method thereof
CN101172798A (en) Building gypsum and mineral additive, and method of manufacturing the same
CN101182141B (en) Method for preparing high-strength structure material by using iron tailings
CN101684675B (en) Autoclaved phosphogypsum brick and method for preparing same
CN101314530A (en) Method for producing building material with low-temperature ceramic modified industry by-product gypsum
CN102731040B (en) Method for preparing building block brick series products by using waste electrolytic manganese slag
CN101614051A (en) Water-tolerant gypsum hollow building block and production method thereof
CN103396052B (en) A kind of production method of environmental protection brick and formula
CN101979353A (en) Fluorgypsum modifying method and process for producing other chemical products by using fluorgypsum
CN106431105A (en) Method for preparing building material by use of industrial byproduct gypsum
CN104710150A (en) Imitation wood grain decorative plate and preparation method thereof
KR101242568B1 (en) Block composer using bottom ash and phospho-gypsum
CN102765893A (en) Method for preparing sulphoaluminate special cement clinker from waste residue fluorine gypsum and red mud
CN101920520A (en) Method for preparing gypsum building block with titanium gypsum
CN1528696A (en) Method for manufacturing gypsun tailing brick
CN104725017A (en) Phosphogypsum substrate simulated wood floor and preparation method thereof
CN106915941B (en) Half water ardealite mine filling material and preparation method thereof
CN110550927A (en) Industrial waste gypsum mortar prepared by industrial tail gas synergy and toxicity solving method

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
C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 518057 SOUTH AREA, SHENZHEN NEW + HIGH TECHNOLOGY INDUSTRY PARK, NANSHAN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE TO: 518000 ROOM A301, SHENZHEN ACADEMY OF TSINGHUA UNIVERSITY BUILDING, SOUTH AREA, SCIENCE AND TECHNOLOGY PARK, NANSHAN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE

ASS Succession or assignment of patent right

Owner name: SHENZHEN QINGYAN TECHNOLOGY MANAGEMENT CO., LTD.

Free format text: FORMER OWNER: SHENZHEN INSTITUTE OF STINGHUA UNIVERSITY

Effective date: 20110111

TR01 Transfer of patent right

Effective date of registration: 20110111

Address after: 518000 A301 room, Shenzhen Research Institute, Tsinghua University, Nanshan District science and Technology Park, Shenzhen, Guangdong

Patentee after: Shenzhen Qingyan Technology Management Co., Ltd.

Address before: 518057, Guangdong, Nanshan District, Shenzhen province Shenzhen hi tech Industrial Park Southern District

Patentee before: Shenzhen Institute of Stinghua University

Effective date of registration: 20110111

Address after: 518000 A301 room, Shenzhen Research Institute, Tsinghua University, Nanshan District science and Technology Park, Shenzhen, Guangdong

Patentee after: Shenzhen Qingyan Technology Management Co., Ltd.

Address before: 518057, Guangdong, Nanshan District, Shenzhen province Shenzhen hi tech Industrial Park Southern District

Patentee before: Shenzhen Institute of Stinghua University

C56 Change in the name or address of the patentee

Owner name: SHENZHEN RITHU VENTURE INVESTMENT CO., LTD.

Free format text: FORMER NAME: SHENZHEN QINGYAN TECHNOLOGY MANAGEMENT CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: 518000 A301 room, Shenzhen Research Institute, Tsinghua University, Nanshan District science and Technology Park, Shenzhen, Guangdong

Patentee after: Shenzhen Qing Yan Venture Capital Co., Ltd.

Address before: 518000 A301 room, Shenzhen Research Institute, Tsinghua University, Nanshan District science and Technology Park, Shenzhen, Guangdong

Patentee before: Shenzhen Qingyan Technology Management Co., Ltd.

Address after: 518000 A301 room, Shenzhen Research Institute, Tsinghua University, Nanshan District science and Technology Park, Shenzhen, Guangdong

Patentee after: Shenzhen Qing Yan Venture Capital Co., Ltd.

Address before: 518000 A301 room, Shenzhen Research Institute, Tsinghua University, Nanshan District science and Technology Park, Shenzhen, Guangdong

Patentee before: Shenzhen Qingyan Technology Management Co., Ltd.

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

Granted publication date: 20090902

Termination date: 20190815

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