Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.
Low springback rate spraying and coating material for thermal-state blast furnace maintenance and preparation method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A low-rebound, paint-spraying technology, applied in the field of unshaped refractory materials, can solve the problems affecting the performance of gunning materials, and achieve the effects of suitable performance indicators, low rebound loss and low rebound loss.
Inactive Publication Date: 2013-07-03
CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP +2
View PDF4 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
The rebound rate of the gunning material has a great relationship with the adhesion, and the poor adhesion will directly affect the performance of the gunning material in the high temperature environment
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0030] The present invention will be further described below in conjunction with specific examples, and the following examples are only used to illustrate the present invention rather than limit the present invention.
[0031] Table 2 lists the raw materials and their contents measured by mass percentage and main technical performance indexes of the spray coating materials for hot state maintenance of blast furnaces of the present invention.
[0032] Table 2 each embodiment and performance
[0033]
[0034] The manufacture method of each embodiment is identical, and its method is as follows:
[0035] First, weigh various raw materials according to the proportioning composition of various raw materials in Table 2; then, in the first step, microsilica powder, alumina micropowder, clay powder, aluminate cement, polyphosphate, metaphosphate, Wood calcium powder plus a part of mullite powder is pre-mixed. In the second step, the organic fiber and refractory aggregate are mixed....
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention provides a low springback rate spraying and coating material for thermal-state blast furnace maintenance and a preparation method thereof. The spraying and coating material comprises the following raw materials in percentage by weight: 30-50% of synthetic mullite particles with the diameter of 5-0mm, 30-50% of A-level flint clay particles with the diameter of 5-0mm, 10-25% of synthetic mullite powder of 200-325 meshes, 0-15% of A-level flint clay powder of 200-325 meshes, 3-8% of aluminate cement, 2-7% of clay powder, 1-3% of silica micropowder of 2-5mu, 3-6% of aluminum oxide micropowder of 5mu, 0-0.3% of polyphosphate, 0-0.3% of metaphosphate, 0.5-3% of lignosulphonate calcium powder and 0-0.3% of organic fiber,The invention has the outstanding characteristics that the springback loss is small, waste of raw materials in the process of construction is reduced on one hand, and the start-up operation of the furnace is facilitated on the other hand; and the spraying and coating material provided by the invention meets the performance requirements on performances such as strength, scouring resistance, scouring and permeation resistance, rapid construction at 150-300 DEGC and the like, and is especially suitable for an unshaped refractory for thermal-state blast furnace lining maintenance. The invention has the outstanding characteristics that the springback loss issmall, waste of raw materials in the process of construction is reduced on one hand, and the start-up operation of the furnace is facilitated on the other hand; and the spraying and coating material provided by the invention meets the performance requirements on performances such as strength, scouring resistance, scouring and permeation resistance, rapid construction at 150-300 DEG C and the like, and is especially suitable for an unshaped refractory for thermal-state blast furnace lining maintenance.
Description
technical field [0001] The invention relates to a monolithic refractory material for repairing and repairing blast furnace linings in a hot state in the metallurgical industry, and provides a low-rebound rate spray coating for hot repairing blast furnace linings and a preparation method thereof. Background technique [0002] my country's blast furnace thermal gunning technology began in 1992 with Baosteel's 1# blast furnace, which was imported from Japan. After that, Baosteel developed a remote-control gunning machine by itself, and the General Institute of Metallurgical Construction Research provided gunning materials. The gunning industrial test was successfully carried out. Subsequently, gunning technology has been greatly developed in China. [0003] Blast furnace hot gunning technology is to repair the furnace type by hot gunning on the damaged part of the furnace lining when the blast furnace is off, so as to improve the circumferential and axial balance of the lining,...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 张金艳李洪会刘兴平范咏莲周云鹏
Owner CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP