Jurnal Puslitbang tekMira (Teknologi Mineral dan Batubara)
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CONTROL OF ILLEGAL MINING (PETI) IN INDONESIA: POLICY AND PROGRAM
No full textThe activity program of illegal mining prevention and tackling which constitutes non-formal enterprise and employing job within the outlying regions becomes as part of the regional development program in which may include community development program as well. Community development in the sector of energy and mineral resources is the program of community empowerment including the community of illegal mining (PETI) is directed toward self-sustainability in the enterprise in lieu of the order of formal enterprise and employing job. The management handling of illegal mining prevention and tackling program may include the components of identification of the PETI causal factors, the system of registering and mapping PETI distribution, the system of state financial loss estimation (fiscal and non-fiscal), mapping PETI players, mapping organiza- tion related to the development and supervision of PETI including its type of job and function, system of PETI prevention, tackling system of PETI impacts, systematization of the effort of PETI prevention and tackling. Successfulness indicator of PETI prevention and tackling may include the progressive and active response of PETI players and the sustainability in terms of social-economics, human and environment as well. The implementation of PETI prevention and tackling faces various challenges and opportunities which should be anticipated. Whatever in the living circle of the people human-being is based on the philosophy of eager to live in the right track in term of law enforcement or legal. At one time, the living of PETI must be left which functions presently as temporary economic safety valve even with very high risk, while formal job has not been yet found out. Somehow, the government has moral responsibility to make the people alive by creating good quality of enterprise and job. The effort of PETI curb is expected to be able to carry out systematically, well- planned and well-directed up to the whole and entire goal is well reached for the shake of nation and state glory and prosperity
DE-ZINCING OF LEAD-COPPER SULPHIDE MINERALS FLOTATION
No full textTypical lead-copper-zinc sulphide minerals were found hard to be separated selectively by froth flotation in the plant practice operation due to part of sphalerite was progressively entrapped into lead-copper bulk flotation. A series of de-zincing on lead-copper flotation tests has been conducted in the laboratory to reduce unwanted zinc content. Dosages variation of common sphalerite depressant such as sodium cyanide, sodium bisulphite combined with zinc sulphate were employed in addition to flotation time and pH regula- tors alteration. The flotation results exhibit that lesser zinc component is still presence in lead-copper concentrate due to intricate association of the minerals particle. However, this study in general performs tendency of de-zincing requirement as well as improvement of lead-copper recovery by increasing con- sumption of such depressant agent and may regrind otherwise
POLICY ON INDUSTRIAL MINERAL RESOURCE MANAGEMENT IN FRAMEWORK OF ELIMINATING DEPENDENCE ON IMPORT
No full textIndonesia is one of the countries in the world that has abundant industrial mineral resource. Known as an exporter, Indonesia in fact also becomes an importer of various industrial minerals in a big and increasing amount from year to year. This is an apprehensive condition considering the negative impact given to the economy due to the absorption of the country’s foreign exchange. It also causes higher dependence on imported material and decreasing job opportunity for the people. Actually, industrial mineral mining does not need high technology and big investment; it is also of low risk. The problem is that the import rate is stagnantly high and it is caused especially by factors of unwise policy and conflict of interest from decision makers. The problem solution has to be derived around the issue. The issuance of Law No. 4 Year 2009 on Mineral and Coal Mining is expected to become the critical moment for reforming the policy and related regulations
IMPORTANCE OF ORGANIC PETROLOGY TO TYPE AND RANK OF MIOCENE ASEM-ASEM COAL-SOUTH KALIMANTAN
No full textThe Asem-Asem Basin has cratonic and back-arc settings containing coal deposits that were formed in Tertiary sequences. The coals were deposited in fluvial to deltaic environments. Megascopically, the coals are dominated by bright-banded and banded lithotypes. Microscopically, vitrinite and liptinite are the dominant macerals in the Miocene coals. Inertinite is a minor component and mineral content is also low in most of the coals. There is significant relationship between megas- copic and microscopic observations; the brighter coal is in association with the vitrinite-rich coal, otherwise, the duller coal is in association with the inertinite-rich coal with relatively high mineral content. The differences in the coal type are due to the interaction of tectonic, geologic, palaeoclimate and plant evolutionary factors. The ranks of the Miocene coals ranging from brown coal to high volatile bituminous indicate a normal regional coalification. Most of the coals are suitable for feedstocks in combustion that is the most important present day use for coals
TEST OF REMOVAL OF IRON MINERALS FROM KAOLIN USING HGMS
No full textKaolin from Nagreg contains iron mineral particles approximately 0.58 % Fe that cause a grey color of the material . An effort to reduce iron content can be made by applying beneficiation test, using HGMS (High Gradient Magnetic Separator), so the kaolin may become white color and can reach the standard quality for paper industries. A HGMS beneficiation test was conducted at magnetic field strength of 5,000 Gauss. The experi- ments were carried out using variable flow rates of 1, 1.5, 2, 2.5, 3 and 3.5 liter per minute and slurry density of 2.5, 5, 7.5, 10, 12.5 and 15 % solid. The results of experiments show that the optimum condition with flow rate of 2.5 liters/minute gave the quality of kaolin concentrate with iron content of 0.29 %Fe
