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System wydobywania i uszlachetniania żwirów ze złoża Drahle III. Kopalnia Drahle. Grupa CRH

Mączka K.

Górnictwo Odkrywkowe

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2014

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R. 55, nr 2-3

61--66

PL

W artykule opisano w jaki sposób realizowane jest wydobycie i uszlachetnianie żwirów ze złoża Drahle III, gdzie stosunkowo wysoki punkt piaskowy determinuje konieczność przemieszczania trzykrotnie większej masy niż ilość produkcji końcowej. W roku 1988 udokumentowane zostało złoże „Kamionka-Drahle " z zasobami 70 min ton w warstwie suchej i 151 min ton w warstwie zawodnionej. Po dokonaniu kilku podziałów ze złoża zasadniczego w 2000 roku wyodrębniono obszar ujęty w dokumentacji geologicznej pod nazwą „Złoże kruszywa naturalnego Drahle 111". Tak wydzielone złoże Drahle 111 z zasobami 36 min ton w warstwie suchej i 56 min ton w warstwie zawodnionej jest eksploatowane od 2008 roku. Zbudowany tu zakład przeróbczy daje możliwość wyprodukowania 1,2 min ton żwirów rocznie, co przy punkcie piaskowym aktualnie eksploatowanej partii złoża w granicach 58% - 70% stwarza konieczność wydobycia rocznie od 2,5 min ton do 3,5 min ton kopaliny.

EN

This article describes how it is implemented extraction and refining of gravel from the deposit Drahle III where a relatively high point of sand determines the need to extract and move ab. three times more weight of mass than the amount of the final production. In 1988, the deposit was documented deposit,, Kamionka - Drahle,, resource of 70 million tonnes in the dry layer and 151 million tonnes in the layer watered. After a few divisions with substantial deposits in 2000 were isolated area included in the geological documentation under the name of „ natural aggregate deposits Drahle III". Separated deposit Drahle III with resources of 36 million tonnes in the layer of dry and 56 million tonnes in the watered layer is operated since 2008. Processing plant built here gives the ability to produce 1.2 million tonnes of gravel per year, which at the point of sand in the part of deposits are currently exploited within 58% -70 %, create a need for extraction per year from 2.5 million tons to 3.5 million tons of minerals.

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AIC-144 cyclotron: present status

Bakewicz E., Budzanowski A., Taraszkiewicz R.

Nukleonika

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2003

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Vol. 48,suppl.2

117-121

EN

The presented AIC-144 cyclotron was designed and constructed 20 years ago in the Institute of Nuclear Physics in Kraków (Poland). Later on it was modernized, after the decision of creating the Hadron Radiotherapy Centre in Kraków was taken by the government. At present, the cyclotron is capable to deliver beams of protons (with energy up to 60 MeV), deuterons (with energy up to 30 MeV) and a-particles (with energy up to 60 MeV). The magnetic structure and the RF system were modernized (a new HF generator with output power 120 kW and frequency range 10-27 MHz was installed; an RF cavity resonator was reconstructed to improve the Q-factor at the highest frequencies). The new PIG source and system of central diaphragms was built to improve beams quality on the first turns. The single lamella and multilamella probes were fully reconstructed. Special effort was put on a highly efficient extraction system. The precession method for particles extraction was chosen as the best one. All computer simulations and experimental runs were done in close cooperation with specialists from the Laboratory of Nuclear Problems JINR, Dubna. The extraction system consists of 2 electrostatic deflectors, 3 magnetic channels (passive) and 4 coils for shaping of the 1st harmonic. So far, the beam extraction experiments were carried out for the proton beams with the final energy of 35 MeV, 48 MeV and 60 MeV. For all these energies the efficiency of extraction was above 50%. A computer remote control of the main magnet power supply and of the 24 correction coils was installed and put into operation. In the last 3 years, the internal beams of protons and a-particles were used to produce radioisotopes like 11C, 57Co, 83-85Sr, 102Rh, 111In, 173-175Hf, 178-181W.

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A new extraction system for the upgraded AIC-144 cyclotron

Bakewicz E., Daniel K., Doruch H., Sulikowski J., Taraszkiewicz R., Morozov N., Samsonov E., Shakun N., Vorojtsov S.

Nukleonika

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2001

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Vol. 46, nr 2

51-57

EN

This paper is a description of the computer simulation and the first experimental results on an AIC-144 isochronous cyclotron new extraction system. The cyclotron will be able to generate beams of protons, deuterons and alfa particles. One of the principal goals of the upgraded facility is to extract beams of protons and deuterons (proton energy 60 MeV, deuteron energy 30 MeV) for proton radiotherapy and for fast neutron beams. The precession method for particle extraction was chosen as the best one. It is the first time that the proton beam of energy 35 MeV has been extracted from the AIC-144 cyclotron with an efficiency of above 50%. More careful adjustment of the extraction system parameters (better control of the 1st harmonic of the magnetic field and the position of the deflectors) will permit an increase in the extraction efficiency to the design value of 70%.