Magnesium-calcium-zirconium brick manufactured by means of in-situ reaction and used for secondary refining and production method
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 technology of out-of-furnace refining and magnesia-calcium-zirconium bricks is applied in the field of basic refractory materials, which can solve problems such as damage of magnesia-calcium bricks, and achieve the effects of improving corrosion resistance, reducing costs and simplifying processes
Active Publication Date: 2014-11-12
RUITAI MATERIALS TECHNOLOGY CO LTD
View PDF5 Cites 11 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
Otherwise, magnesia-calcium bricks may be damaged by thermal shock and hydration
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 1
[0028]The ratio used is: 3-1mm magnesia 55%, 1-0.088mm magnesia 10%, 0.5-0.088mm desiliconized zirconium 3%, 3 , Apparent porosity 14.0%, compressive strength 52MPa, load softening temperature 1700°C, thermal shock stability 1100°C water cooling 7 times, the product has certain thermal shock resistance.
Embodiment 2
[0030] The ratio used is: 5-3mm magnesia 17%, 3-1mm magnesia 35%, 1-0.088mm magnesia 6%, 0.5-0.088mm desiliconized zirconium 5%, 3 , Apparent porosity 13.0%, compressive strength 55MPa, load softening temperature 1680°C, thermal shock stability 1100°C water cooling 12 times, the product has good thermal shock resistance.
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
Property
Measurement
Unit
reduction of area
aaaaa
aaaaa
porosity
aaaaa
aaaaa
Login to view more
Abstract
The invention relates to a magnesium-calcium-zirconium brick manufactured by means of in-situ reaction and used for secondary refining and a production method. During manufacturing, 0-20% of 3 mm-5 mm magnesia particles, 30-55% of 1 mm-3 mm magnesia particles, 4-15% of 0.088 mm-1 mm fine magnesia particles, 2-10% of 0.088 mm-0.5 mm fine desilicated zirconia particles, 5-30% of magnesia powder with the diameter being less than 0.088 mm, 0-15% of calcium zirconate powder with the diameter being less than 0.088 mm, 2-9% of zirconia micro powder with the diameter being less than 0.020 mm, 2-8% of calcium carbonate micro powder with the diameter being less than 0.020 mm, 4-8% of additional waste pulp liquid and 0.2-0.05% of additional third-generation water reducing agents are used; during production, the adopted process includes the steps that firstly, the zirconia micro powder and the calcium carbonate micro powder are premixed; secondly, the 3 mm-5 mm magnesia particles, the 1 mm-3 mm magnesia particles and the 0.088 mm-1 mm fine magnesia particles are added to a mixing mill, and he waste pulp liquid and the third-generation water reducing agents are added to the mixing mill to be mixed; thirdly, magnesia powder with the diameter being less than 0.088 mm, calcium zirconate with the diameter being less than 0.088 mm and premixed zirconia-calcium carbonate micro powder with the diameter being less than 0.020 mm are add and mixed until the mixture is even; finally, forming, drying, 1580-1700 DEG C sintering and checking are conducted on the mixture to obtain a refractory material with periclase-calcium zirconate-baddeleyite as a main crystal phase. The magnesium-calcium-zirconium brick has the advantages of being convenient to manufacture, low in cost, simple to use and excellent in performance, has excellent anti-erosion performance and thermal shock resistance, excellent high-temperature physical and chemical stability, and is competent for the work of secondary refining to make clean steel.
Description
technical field [0001] The invention relates to an alkaline refractory material used for refining equipment outside a furnace in the metallurgy and machinery industry and a production method thereof. The material has the characteristics of convenient manufacture, low cost, simple use, and excellent performance. It not only has excellent corrosion resistance and thermal shock resistance, but also has excellent high-temperature physical and chemical stability, so it can be competent for the harsh work of refining outside the furnace. Deep desulphurization, deoxidation, and the task of controlling non-metallic inclusions in molten steel to produce high-quality steel with high toughness and high reliability, such as ultra-low carbon steel with high cleanliness. Background technique [0002] Refining outside the furnace is a process that can significantly increase the output of steelmaking and the quality of steel products. It is characterized in that the refining task in the ste...
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.