Patent ID: 11953455
Assignee: SHANDONG UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An ore component analysis device, comprising:
a sample containing device, which is configured to place an ore sample to be detected;
an excitation unit, which is arranged above the sample containing device and configured to output X-rays with continuously adjustable energy, so that the X-rays interact with the ore sample to be detected and excite the ore sample to generate secondary X-rays;
a detector, which is arranged above the sample containing device and configured to detect the secondary X-rays;
a signal processing unit, which is connected to the detector and configured to amplify, shape and classify the secondary X-rays detected by the detector to obtain counts and energy of the secondary X-rays; and
a data processing device, which is connected to the signal processing unit and configured to analyze and calculate data processed by the signal processing unit, wherein the data processing device comprises a processor and a memory, and the processor is configured to execute following program modules stored in the memory:
a storage module, which is configured to store known elements and energy and occurrence probability of X-rays corresponding to the elements;
a matching module, which is configured to match the energy of the secondary X-rays with the energy of the X-rays corresponding to the known elements stored in the storage module so as to determine elements corresponding to the secondary X-rays and obtain occurrence probability of the secondary X-rays;
a count correction module, which is configured to correct the counts of the secondary X-rays according to attenuation efficiency of the secondary X-rays in the air to obtain a corrected energy spectrum of the secondary X-rays;
a peak seeking module, which seeks peaks on the corrected energy spectrum of the secondary X-rays and calculates peak area of each peak;
a calculation module, which calculates content of each element in the ore sample according to the peak area and the occurrence probability of the secondary X-rays, where the content Pi of an element i is expressed as:, P
       i
      
      =
      
       
        
         I
         i
        
        
         ∑
          
         
          I
          i
         
        
       
       =
       
        
         
          A
          i
         
         /
         
          (
          
           
            ε
            i
           
           ×
           
            ε
            j
           
          
          )
         
        
        
         ∑
         
          
           A
           i
          
          /
          
           (
           
            
             ε
             i
            
            ×
            
             ε
             j
            
           
           )
          
         
        
       
      
     
     ,
    
   
   
    
     (
     1
     )
    
   
  
 

where Ii is an intensity of the element i, Ai is the peak area of the element i, εi is the occurrence probability of the secondary X-rays of the element i, and εj is intrinsic detection efficiency of the detector for the secondary X-rays of the element i; and
a content correction module, which is configured to perform matrix effect correction on the content of each element calculated by the calculation module by using a measurement result of a standard ore sample to obtain final content of each element in the ore sample.