A method for measuring bubble diameter in flotation process
What is AI technical title?
AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
A technology of bubble diameter and measurement method, which is applied in image analysis, image enhancement, instruments, etc. It can solve the problems of heavy manual workload, large deviation of results, poor system consistency, etc., achieve automatic background noise removal, and solve adhesion Effect
Active Publication Date: 2021-09-28
北京拓金科技有限公司
View PDF16 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
[0008] 1) Since there is no fixed measuring camera for manual measurement, the consistency of the system is not good, and there are deviations in the size of the bubbles;
[0009] 2) Constrained by many factors such as lighting, photographing frequency and exposure time, traditional methods may have problems such as missing measurements and repeated measurements, which are not easy to find;
[0010] 3) For situations such as bubble adhesion, it can only be estimated artificially, and the results estimated by different observers have large deviations;
[0011] 4) The manual workload of the above-mentioned process is very large, and the labor intensity is high
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
specific Embodiment approach
[0034] The measuring method of flotation process bubble diameter of the present invention, its preferred embodiment is:
[0039] 4. Gradient transform the grayscale image along the y direction and take the absolute value, then sum the image along the x direction, and draw the grayscale statistical chart of the picture along the y direction, that is, get the grayscale change histogram of the pixels in the same direction in the y direction Figure, the meani...
specific Embodiment
[0055] Concrete embodiment, comprises steps:
[0056] 1. Arranged as figure 1 For the experimental device shown, insert the air inlet into the appropriate depth of the slurry tank; adjust dynamic parameters such as light source, object distance, camera focal length, camera exposure time, frame rate, etc., and start sampling;
[0057] 2. Get bubble pictures 1, 2, 3, ... based on time series;
[0059] 4. Gradient transform the grayscale image along the y direction and take the absolute value, then sum the image along the x direction, and draw the grayscale statistical chart of the picture along the y direction, that is, get the grayscale change histogram of the pixels in the same direction in the y direction Figure; the meaning of this figure is the strength of the gas measuring device in ...
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 measuring the diameter of bubbles in a flotation process, which uses an automatic method to measure the total volume of the bubbles, the total number of the bubbles, the size of the bubbles and the distribution of the diameters of the bubbles per unit cross-sectional area at different depths of the flotation liquid surface. The measurement of the bubble distribution at different liquid level heights in the flotation process is realized, and the above-mentioned measurement method is automated by using the method of machine vision. Adopt the background elimination technology to effectively obtain the moving area of the bubbles. Through the bubble feature matching technology, it can effectively prevent omission or repeated statistics in the process of bubble diameter statistics. Bubble segmentation technology effectively prevents the problem of large statistical particle size caused by bubble adhesion, making the instrument more accurate. Realized the automatic segmentation of bubbles; solved the problem of the continuous decline and recognition of the air-water interface of the bubbles during the inflation process; solved the problem of frame matching before and after the bubbles in the process of rising; realized automatic background noise removal.
Description
technical field [0001] The invention relates to mineral flotation, in particular to a method for measuring the bubble diameter in the flotation process. Background technique [0002] The flotation process is one of the most important sorting technologies in the mineral processing process. The essence of flotation is to sort the various particles attached to the surfactant by stirring the water injected into the air according to the hydrophilicity and hydrophobicity of the minerals. Sorting. Therefore, the size of the bubbles at each level in the pulp is particularly important during the flotation process, and the total surface area of the bubbles represents one of the important indicators of the flotation process. [0003] The research on the distribution of air bubbles in the flotation process is one of the important measurement methods in the design process of the flotation machine, and it is also a necessary method and means to improve the flotation effect. Due to the...
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