Method for continuously determining content of calcium oxide and magnesium oxide in bentonite
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 determination method and calcium oxide technology are applied in the field of refractory materials, which can solve the problems of long process flow and high cost of analysis methods, and achieve the effects of saving drugs, reducing detection costs and low cost.
Inactive Publication Date: 2015-12-16
INNER MONGOLIA BAOTOU STEEL UNION
View PDF2 Cites 9 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
Solve the problem of long process and
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 above-mentioned and other technical features and advantages of the present invention will be described in more detail below in conjunction with the embodiments.
[0031] 1. Method summary: Dissolve the sample in a polytetrafluoroethylene plastic beaker with hydrochloric acid (65%), nitric acid (67%)-hydrofluoric acid (40%), add perchloric acid to smoke, the smoke is clear, and a little smoke Invisible, test solution dried up. Add 10mL of hydrochloric acid (65%) and heat to dissolve the salts. Transfer the test solution to a 250mL volumetric flask, dilute to the mark and dissolve. Take two parts of 50mL solution, put them in two 250mL beakers respectively, add 50mL triethanolamine (12%) to one part, add 50mL water, add a little hydroxylamine hydrochloride, add 30mL potassium hydroxide solution (20%), appropriate amount of calcein , and titrate with EDTA standard solution until the fluorescent green disappears as the end point. Add 50mL triethanolamine (12%) to ano...
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 discloses a method for continuously determining the content of calcium oxide and magnesium oxide in bentonite. According to the method, a bentonite sample is added to a polytetrafluoroethylene plastic beaker, another beaker is not filled with the bentonite sample and serves as a blank control, then hydrochloric acid and nitric acid-hydrofluoric acid are added for dissolution respectively, perchloric acid is added for smoking, then hydrochloric acid is added to heat and dissolve salt, test solutions are transferred to large volumetric flasks respectively and diluted to a constant-volume scale, each solution is split into two parts of solutions with equal quantities; triethanolamine, water and hydroxylamine hydrochloride are added sequentially to one of the sample and the blank control, a potassium hydroxide solution and an appropriate amount of calcein are added, an EDTA (ethylene diamine tetraacetic acid) standard solution is adopted for titration until fluorescent green disappearance, the volume is recorded, and the content of calcium oxide is calculated; triethanolamine, water and hydroxylamine hydrochloride are added sequentially to the other one of the sample and the blank control, an ammonia-ammonium chloride buffer solution and an appropriate amount of eriochrome black T indicator are added, the EDTA standard solution is adopted for titration until purple red turns into blue, the volume is recorded, and the content of magnesium oxide is calculated.
Description
technical field [0001] The invention relates to the field of refractory materials, in particular to a continuous determination method for measuring calcium oxide and magnesium oxide in bentonite and clay by volumetric method. Background technique [0002] Bentonite is a kind of clay rock, also known as montmorillonite clay rock, often containing a small amount of illite, kaolinite, halloysite, chlorite, zeolite, quartz, feldspar, calcite, etc.; generally white, light yellow, Due to the change of iron content, it is light gray, light green, pink, brown red, brick red, gray black, etc.; it has waxy, earthy or greasy luster; some bentonites are loose like soil, and some are dense and hard. The main chemical components are silicon dioxide, aluminum oxide and water, and also contain iron, magnesium, calcium, sodium, potassium and other elements, Na 2 The content of O and CaO has a great influence on the physical and chemical properties and technological performance of bentonite....
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 
Login to view more