A method for pretreatment of tourmaline electric pulse by using high-voltage electric pulse device
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A high-voltage electric pulse and device pair technology is applied in the field of electric pulse pretreatment of tourmaline by using a high-voltage electric pulse device, which can solve the problems of increased cost of tourmaline, long grinding time, low efficiency, etc. efficiency, short processing time and high production efficiency
Active Publication Date: 2021-03-16
NORTHEASTERN UNIV LIAONING
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However, the current situation is that the energy consumption is large and the grinding time is long. Therefore, the efficiency is extremely low, and the deep processing of tourmaline will undoubtedly increase the cost.
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Embodiment 1
[0080] The tourmaline raw ore used comes from Chifeng, Inner Mongolia, and the chemical elements are shown in Table 1 by mass percentage;
[0081] Table 1
[0082] components B 2 o 3
SiO 2
al 2 o 3
TF MgO CaO Na content / % 7.27 50.05 18.60 11.37 3.33 1.76 0.95 components TiO 2
FeO P K S Burn out content / % 0.84 0.25 0.078 0.058 ＜0.004 1.98
[0083] The main content of tourmaline raw ore is SiO 2 , accounting for 50.05%, followed by Al 2 o 3, accounting for 18.60%; total iron content is 11.37%, of which magnetic iron accounts for 0.25%, B 2 o 3 The content of magnesium oxide is 7.27%, and the content of magnesium oxide is 3.33%. The scanning electron microscope analysis results of the ore are as follows: Figure 8 and Figure 9 shown;
[0084] The method is:
[0085] Start the water pump so that water continuously enters the pulsating insulation cylinder of the pulsation device and is...
Embodiment 2
[0098] The tourmaline raw ore used comes from Xinjiang Altai, the particle size is 2-12mm, the color is dark gray, and the chemical formula is NaFe 3 al 6 Si 6 o 18 (BO 3 ) 3 (OH) 4 ;Using EPMA-1720 electronic probe to detect the chemical composition of the sample, the accelerating voltage is 15kV, the beam current is 2×10-8, and the beam spot diameter is 0.5μm; the chemical composition is shown in Table 2 by mass percentage;
[0099] Table 2
[0100] main component SiO 2
al 2 o 3
MgO TF content / % 38.45 29.67 9.89 3.29
[0101] The main component of ferrite tourmaline is SiO 2 、Al 2 o 3 , MgO and FeO;
[0102] Method is with embodiment 1, and difference is:
[0103] The processing time of ore subjected to high-voltage electric pulse is 30 minutes, and the grinding time is 30 minutes.
[0104] Laser particle size detection and scanning electron microscope analysis were carried out on the tourmaline powder obtained by the ...
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Abstract
The invention discloses a method for electric pulse pretreating on tourmaline by utilizing a high-voltage electric pulse device. The method adopts the high-voltage electric pulse device, and comprisesthe following steps that (1) a water pump is started, so that water continuously enters a pulsating insulating cylinder, and is continuously discharged from a product collector; (2) tourmaline ores are conveyed into the pulse insulating cylinder through an ore feeding bin, and are accumulated on a screen to be in contact with a high-voltage electrode; (3) a power supply is started to enable discharging is conducted between a piezoelectric electrode and a high-voltage negative electrode, so that the tourmaline ores are crushed; (4) an eccentric wheel is driven to rotate so as to enable a pulsating cone-shaped body to move up and down periodically, and enable small particle parts in the tourmaline ores on the screen to gradually move downwards; and (5) the crushed tourmaline ores enter theproduct collector through a pulsating device. The method has the advantages that the treatment time is short, the production efficiency is high, the energy consumption is low, crushed products are free of pollution, and the subsequent deep processing of the tourmaline is facilitated.
Description
technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a method for pretreating tourmaline electric pulses by using a high-voltage electric pulse device. Background technique [0002] Tourmaline is a general term for tourmaline minerals. It is a ring-structured silicate mineral characterized by boron and very complex in structure and chemical composition. The Mohs hardness of tourmaline mineral is about 7-7.5, and the density is 2.9-3.25g / cm 3 Between; With the development of technology and the continuous research of mineral materials, tourmaline is gradually widely used in environmental protection, chemical industry, transportation, textile, air purification, food and medicine, water quality improvement, architectural decoration and shielding electromagnetic radiation and other fields. [0003] Tourmaline has permanent spontaneous polarization effect, piezoelectricity and pyroelectricity, can release negative...
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