Method for testing chemical constituents in coal or coke ash by X-ray fluorescence spectrum analysis method
A technology of fluorescence spectroscopy and chemical composition, which is applied in the direction of material analysis, material analysis, and measuring devices using wave/particle radiation. It can solve the problems of complex sample pretreatment, difficult operation, and large consumption of reagents, and achieve high accuracy. , short analysis time and fast analysis speed
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[0011] More specific implementation:
[0012] 1. Main equipment:
[0013] a) Wavelength dispersive X-ray fluorescence spectrometer:
[0014] The detector is a scanning flow gas proportional counter and a scintillation counter;
[0015] Maximum power: 4kW;
[0016] b) Sample preparation equipment:
[0017] High frequency melting furnace or infrared melting furnace.
[0018] 2. Chemical reagents:
[0019] a), oxidant LiNO 3 : 220mg / ml;
[0020] b). Release agent LiBr: 30mg / ml.
[0021] c), flux LiB 4 O 7 +LiBO 2 : 67%+33%
[0022] Note: The above reagents are above analytical grade.
[0023] 3. Ashing of samples:
[0024] Weigh 1g coal and coke samples with a particle size of less than 1mm in an ash dish (usually analyze the coal sample so that it does not exceed 0.15g per square centimeter), put the ash dish into a muffle furnace at 100°C, and leave it in the natural ventilation and furnace door. Under the condition of a gap of about 15mm, slowly increase to 500℃ in 30min, after keeping at this...
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