Study of the formation and relaxation processes of seismic luminescence for rocks in a low-energy vibration-seismic field

Results are considered for a study under in-situ conditions of the formation and relaxation processes of seismic luminescence of rocks which arises in an oil-producing stratum during its nonlinear interaction with a low-energy vibration-seismic field. The data obtained are of practical importance for optimizing the regime and duration of action on oil deposits. Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 8–13, January–February, 1999.     

Low-frequency resonances of seismic luminescence of rocks in a low-energy vibration-seismic field

Results are presented for an investigation of the effect of monochromatic low-frequency vibrations generated by surface sources on the seismic emission of oil-producing strata under in-situ conditions. The resonance nature of seismic luminescence of rocks is detected. The connection of the observed resonance pattern with the block-hierarchical structure of the medium is demonstrated. Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 3–7, January–February, 1999.     

Specific Energy Prediction for Circular Diamond Saw in Cutting Different Types of Rocks Using Multivariable Linear Regression Analysis

Circular diamond saw performance is affected by a variety of factors. The principal factors requiring consideration when predicting cutting rates are the type and operating features of a diamond saw and the rock characteristics. The laboratory experimental tests are carried out on three groups of rocks (16 types) cut with the help of three types of diamond disk saws with different feed rates and cutting depths at constant peripheral velocity. The quantitative determinations of a wide range of textural, mechanical, and intact properties of rocks are also made. The relationship between the specific cutting energy SE _cut of the sawblade operating parameters and rock properties is established. Applying multivariable linear regression analysis, the predictive model of SE _cut is developed based on the rock property data. Models verified by statistical tests prove their practical validity. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 56–80, May–June, 2005.     

EMR recording equipment for underground mines

The prototype of a new portable device of EMRR series (electromagnetic radiation recorder), EMRR-3 is developed and manufactured to monitor and forecast dynamic rock mass manifestations by electromagnetic radiation signals. The device makes it possible to predict dynamic manifestations based on algorithms of stable electromagnetic signal detection, to perform long-term (up to 8 h) digital recording of electromagnetic situation in underground mine workings, followed by the accumulated information computer-processing. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 115–122, March–April, 2008.     

Nonlinear effects in the radiation and propagation of vibro-seismic signals in a rock mass

Results are presented from measurements of the vibro-seismic field of a surface source in a rock mass at depths of up to 1.5 km. Effects connected with the grouping of sources are examined along with the transformation of the signal spectrum during passage through an oil stratum. It is shown that the absorption coefficient of vibro-seismic monochromatic signals by sedimentary rocks is within the range 0.63–0.75 dB/λ_p, where λ_p is the length of the longitudinal waves. Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 3–10, March–April, 1999.     

The enabling technology for recovery of valued components from minerals in the upper and Mid Amur region

Based on the physico-technical operations involved in the mineral processing technologies, the optimal production conditions are found for refractory fiber materials, aluminium, silicium, their compounds and other valued components. Ecologically safe and efficient aggregate technologies are developed for recovery of valued components from nonmetallic minerals and anthracides (brown coals). __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 110–120, May–June, 2009.     

Mechanism and efficiency of water-based removal of grease from diamonds during grease separation

The article reports the results of applying the new developed water-based emulsion method of grease removal from diamond-containing concentrate of grease separation. The described method raises the diamond luminescence emission intensity and diamond extraction during X-ray luminescence separation.     

A new approach to the production of aluminum and its compounds from nonconventional alumina feedstock

The paper describes a new approach to alumina and aluminum production from a nonconventional aluminosilicate feed, namely, zeolite tuffs. The authors substantiate mineralogical features and technological principles of treatment of zeolites and clayey minerals that are in composition of zeolite ores. The illustrated use perspectiveness for the zeolite processing and mechanical activation will greatly enhance the processes of opening and decomposition of base minerals. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 96–101, March–April, 2009.     

Determination of properties of structured rock mass by the acoustic method

An approach to determination of properties of a rock mass with a layered structure by acoustic sounding is proposed on the basis of solution of inverse problems of seismic probing. Methods for selecting the initial approximation ensuring convergence of iterative processes are indicated. The optimal parameters of the input signals and the duration of the output signal are found. It is shown that interlayer joints may serve as an indicator of the variation of external stress field in the mass. Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 36–44, May–June, 1999     

Interaction of Internal Structure,Chemistry, and Processing Characteristics of Pyrite from the Gaisk Deposit

Four mineralogical-processing modifications of the Gaisk deposit pyrite are distinguished; they differ in forms of appearance and content of gold, arsenic, silver, and zinc. The processing expediency is substantiated for separation of the gold-richest (more than 9 g/t) pyrite modification from the bulk by a gravitation-flotation scheme after preliminary grinding up to −0.074 mm in size, using the arsenic-selective reagent. In this case, it is theoretically possible that pyrite-associated gold extraction reaches 85 %. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 90–98, May–June, 2005.     

Estimation of duration of electromagnetic-radiation signals in rock failure

The criterion and procedure of determining the duration of the electromagnetic-radiation signals of rock samples in various stages of loading are proposed. Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 61–65, July–August, 1999.     

The potential of technogenic formations in mines of the West Siberia

The profit expectations of treating the technogenic formations in mines of the West Siberia are assessed based on the analytical studies. The innovative processing technologies will allow production of marketable concentrates, extraction of noble and rare metals and manufacturing of fractioned ballast stone. Technogenic formation is dumped wastes of previous mining enterprises, which contain sufficient raw material suitable for the efficient commercial utilization and new production with the new technologies applied __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 71–77, July–August, 2008.     

Nanotechnological mineralogy

The paper presents an outlook for the development of mineralogy nanotechnologies, including for mineral processing. It is shown that a mineral with the modified non-structure acquires new properties (for instance, sorption), which may greatly expand the processing technology potential. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 112–118, January–February, 2009.     

Raman scattering in diamond and associated minerals of diamond-bearing ore

Conclusion In this work we have found that out of the 40 ingredients of the diamond-bearing ore, not more than five samples luminesce. The ore contains less than 1% luminescing samples whose intensity is close to the intensity of Raman scattering in diamonds. The obtained data as well as the relatively low level of the luminescence background and a very narrow Raman scattering peak suggest that the Raman scattering method is highly promising for extraction of diamonds and other minerals from the ore. Institute of Design and Technology of Scientific Instruments, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, Vol. 33, No. 5, pp. 126–130, September–October, 1997.     

Time-and-Spectrum Analysis to Study Rock Failure Dynamics

A procedure is proposed for the time-and-spectrum data tabulation using electromagnetic emission signals obtained in loading marble specimens, which allows failure dynamics to be analyzed. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, 49–59, July–August, 2005.     

Mechanoelectrical transformations in quartz and quartz-bearing rocks under acoustic action

The data are reported for investigation into a frequency spectrum of an electromagnetic signal recorded in artificial crystal quartz and natural quartzite subject to a piezoacoustic action. Variations in the amplitude and duration of an exciting acoustic signal, as well as in the distance between a device, which receives the electromagnetic signal, and an emitting surface change the amplitude-frequency characteristics of the electromagnetic signals. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 5, pp. 22–27, September–October, 2007.     

Modeling failure of geomaterials around a hole under internal pressure

The paper presents the deformation measurement procedure for granular materials by using step-by-step shooting of surface of a sample and the computer-aided data processing in the course of loading. Based on the procedure, the results of laboratory modeling of plastic flow and failure around a hole under internal pressure are considered. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 3–9, March–April, 2007.     

Devices for Continuous Recording of the Parameters of Deformation—Wave Processes in Rock Mass. Part II: Design of the Optoelectronic Micrometer Sensor

An optoelectronic micrometer display sensor for determining deformations in samples of rocks and models of block geomedia is presented. The sensor is equipped with a microprocessor data collection system for the on-line detection of deformation changes, which is of fundamental importance when determining stresses and failures in rock samples. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 108–117, July–August, 2005.     

New technological solutions for the beneficiation of synnyrites

New technologies for processing high-potassium alumopotassium raw material (synnyrites) on the basis of the previously established possibility of separating aluminosilicates with similar cations are substantiated. A combined scheme including chemical, flotation and magnetic beneficiation that provides the production of kalisilite and microcline concentrates is suggested. The kalisilite concentrate is a new chlorine-free potash fertilizer and the high quality feldspar concentrate is a scarce raw material for the porcelain-faience, electrical engineering, and refractory industries. United Institute of Geology, Geophysics, and Mineralogy, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 122–126, May–June, 1999.     

Comparative analysis of the acoustic emission parameters recorded in carnallite under deformation and dissolution

An analysis is performed into the differences the spectra of the acoustic emission signals exhibit in the frequency range from 30 to 500 kHz in carnallite samples subjected to deformation and dissolution. It is shown that the spectral components on the lower frequencies of the mentioned range have higher amplitudes in the sample under the deformation. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 6, pp. 31–39, November–December, 2006.