2005

Mineral mining activities in Ha Tinh area: The situation and orientations

The report refers to the situation of mineral mining activities in Ha Tinh area such as inmenite, maganese, gold, coal and building stones. From this, the report has proposed the orientations on mineral mining in the coming years in Ha Tinh.

About degraded rocks concerning to sapphire at Kon Tum geological block

The report represents the forms of rocks with local and exchange degradations specified by groups of symbiotic minerals with their geochemical properties. From analysed data and by correlation coefficient, conditions for forming degraded rocks concerning to sapphire have been determined.

About drainage trenches in haulage roadways using mine cars when the floor having no swelling capacity

After analysing the requirements of drainage trenches and their lids, the author pointed out standards for determining position of drainage trenches with structural forms and heights of the lids.

About mineral processing technology of Vietnam

Basing on analysing properties, potentiality and mineral mining and processing situation in Vietnam, the author refers to some development orientations and demands for mineral processing technology, contributing to the sustainable development of Vietnam mineral industry.

About possibility of using mining equipment without blasting in surface mining

Mining is a very important industry for the economic development of all countries. However, its influence on environment is also considerable, especially in surface mining. To develop stably, benifit from mineral mining and responsibility of environmental protection needs to be strictly considered. Thus, mining methods and equipment without blasting used in surface mining with suitable conditions are appropriate technological sollutions in order to reduce environmental pollution. The paper refers to the mining methods and equipment which can be possibly used in surface mining now in the world.

About processing work for Vietnam titanium

Strong investment in the field of titanium ore mining and processing is the essential development for mineral industry. The report represents some initial results from the prodution of merchantable ores such as inmenite, zircon, rutil, ... and the recommendations for a reasonable and intelligible policy from the State for titanium ore mining and export activities.

About some technological changes at Lao Cai apatite ore preparation plant

Some changes in technologies that have been recently applied to Lao Cai apatite ore preparation plant have brought back efficiency at various levels. After looking over these changes, the paper analyses disadvantages for getting better results when coping with difficulties at various mine sites.

About sustainable development and the capability of science and technology for meeting the demands of sustainable development

The report represents fundamental concepts of sustainable development, criteria for sustainable development and the capability of science and technology for meeting the demands of the above criteria. The report also refers to overall tasks for the target of "sustainable development".

About the application of hydro cyclone to the preparation of wheathered ores with extremely fine grains in Vietnam

Subjects of Vietnam weathered ores such as Dong Pao rare earth ore or kaolin mines with the specific features that their main components contain extremely fine grains. For seperating the above subjects, hydraulic method is very effective an less polluted. Basing on research and practical results from the preparation of Dong Pao rare earth ore and kaolin in Vietnam, the report represents som problems about the application of hydrocyclone.

About the determination of dimensions for split set anchors

Split set anchor is one of the anchors widely applied to strengthen temporarily rock masses. The paper refers to the determinatibn of dimensions for split set anchors.

About the separation of mining stages for La Hien limestone mine (Thai Nguyen province)

With the reasonable separation of mining stages, La Hien limestone mining project (belonging to Thai Nguyen Cement Plant) can operate safety, ensure required output and high economic efficiency. The report introduces brieftly contents of the project.

Analysis and determination of the fully mechanised top caving technology

The paper refers to the analysis and determination of the fully mechanlsed top-caving technology in general and the fully mechanised top–caving in Quang Ninh mines in particular.

Application of dieter table method for fat coal preparation Phan Me coal mine

The report introduces the fat coal preparation method at Phan Me coal mine using dieter table replacing contracting chute and flotation which has been successfully applied since 2001.

Application of electronic detonators in mineral mining industry

Electronic detonators were invented in 1980, however, we are experiencing an application trial booming of electronic detonators only by late 1990. Extensive trial of Orica's i-kon systems have showed positive results. This paper represents general structure and features of electronic detonators and application trial results of i-kon electronic detonators at selected mines.

Application of environmental management system ISO 14001: 1996 in the field of mining and mineral processing

Tam Hiep Experimentation Center belonging to Institute for Research on Mine and Metallurgy is an institution for study and pilot production in the field of mine and metallurgy, one of the sectors having great impacts on environment. Therefore, the development of technological science in parallel with the application of environment management system according to standards ISO 14001:1996 is not only great significant to the Center and surrounding community but also has great active influence when carrying out national wide technology transfers.

Application of information technology in the management and investigation of mineral mines

Vietnam mineral is diverse and abundant. Up to now, the exploration, investigation and exploitation of mineral mines have been carried out at various levels. The author has provided a program for applying informatics technology to the management and investigation of mineral mines. This program is convenient for the mineral research, exploration and exploitation at present and in future as well, contributing towards our cause of modemisation and industrialisation.

Application of some copper alloys and aluminum alloys with high mechanical properties to mining equipment fabrication

The life expectancy of equipment depends on many factors and the most important one are materials used to fabricate them. The report introduces some copper alloys and aluminum alloys with high mechanical properties that have been often utilised to fabricate mining equipment. It also refers to fundamental bases for selecting materials as. well as factors impacting on material quality such as chemical composition of materials, casting and metallurgial technologies.

Application of underground mine ventilation softwares to the calculation of ventilation networks for ensuring safety in coal mining in VINACOAL

Underground coal mines get deeper and deeper with higher level of mechanisation and higher risks of methane gas concentration. It needs the improvement in mine ventilation control, management and supervision. Utilisation of underground mine ventilation softwares such as PATH and KAZEMARU leads to increase efficiency in mine ventilation systems, improve microclimate, prevent methane gas explosions and ensure safety in coal mining activities.

Balance of equipment quantity in transportating and loading lines at open pit mines by using economic problems

One of the essential tasks for production organisation at open pit ore or coal mines is to coordinate the operation of transporting and loading equipment. For implementing this task, it is to balance equipment quanlity in this line. By using economic problems, the report refers to the method for balancing equipment quantity in transporting and loading lines at open pit mines.

Blasting operation at close mines

Seismic waves have been caused by earthquakes or blasting operations. Seismic waves caused by blasting operations with large amounts of explosive, especially at close mines, often cause deformations or even destructions for surface and underground buildings.

Clean production and the capability of its application for coal mining enterprises

For meeting the demands of increasing output in coal sector, stable production and minimising environmental pollution. it is necessary to apply clean production strategy to the coal mining enterprises. The report refers to the contents that need to be implemented in the production lines of the enterprises for ensuring clean production.

Clean production and the capability of its application to mineral mining and processing activities in vietnam

The report evaluates the situation of clean production application to mineral mining and processing activities in Vietnam. It also analyses the reasons for the capability of its application in future. International experiences and theories on clean technology and clean production applied to mining have been studied and compared to provide solutions and suggestions for applying clean technology to mineral mining to meet its sustainable development in Vietnam.

Coal resource at the areas having protected objects on the surface belonging to VINACOAL

Coal is a natural resource without recreation, therefore coal mining has to ensure high efficiency, national energy security and civil, industrial constructions and historical, cultural relics.

Coal selectively mining and processing technology at Tan Nam Da Mai Joint Stock Company

The report introduces technological solutions that Tay Nam Da Mai Coal Joint Stock Company has applied to coal mining and processing activities to increase quality of merchantable coal and decrease coal losses.

Design, fabrication and installation of ventilation system and water spraying system for dust prevention at NJ/II coal preparation center, improving working conditions for workers

For minimising dust concentration and improving working conditions at No III coal preparation center, Cua Ong Coal Company has designed, fabricated and installed a ventilation system and a water spraying system for dust prevention with high efficiency.

Determination of the thickness of removed inter-rock layers during coal excavation

Removement of inter rock layers in coalbeds is to improve the raw coal quality and increase the recovery value of mining products. The paper introduces scientific and practical bases for determining minimum thickness of inter-rock layers needed to be removed for meeting the above purposes.

Estimation of the thickness of the safety bulkhead and critical water pressure causing water breakout at underground coal mines

The report deals with the scientific properties of the estimating method of the critical water pressure and the thickness of the safety bulkhead for preventing water breakout at underground coal mines. It also refers to some estimating results about the risks of water breakout at some coal seams in Quang Ninh coal basin.

Evaluation of Yen Phu fine grained rare earth preparation with column flotation machine

In the world wide mineral preparation sectors, the traditional flotation machines have been gradually replaced by column flotation machines. For Yen Phu fine grained rare earth, the column flotation machines operating in the laboratory have provided higher norms on net content of clean ore.

Evaluation of efficiency in burden smahing technology by using rippers at Nui Beo Coal Company

Burden ripping method has been widely applied at many open pit mines on the world recently. In Vietnam, Nui Beo coal mine is the first place applying this technology. The paper introduces scientific and practical bases as well as obtained results of burden smashing technology by using ripper D10R.

Floating troughing for titanium mining and initial separation

Vietnam titanium mining sector has been founded and developed since the beginning of 1990s. Enterprises have continuously applied modern science and technologies to production to decrease production cost, increase productivity and improve technologies. Initial separation method for coastal alluvial using floating troughing has been applied to production in 2003, meeting the economic and technological demands.