Search results

Also, the sulphide mineral products subjected to leaching have a grain size of 60-100% of the minus class 0.071-0.074 mm.
Conclusion So, the technical-economical assessment and the experience of the number of foreign enterprises shows, that the extraction of precious and other valuable metals from final tailings of beneficiation plants of nonferrous and ferrous metallurgy can be organized only as supplementary from the beneficiation tailings of the current production, at operating plants and also from the transportable rock mass.

Fine grain size and mostly black thick layer of mudstones with the thickness of 231 to 682 meters were developed within Qihulin formation, containing a lot of ammonites and other marine bivalve fossils.
Table 1 Evaluation standard of hydrocarbon generating potential in coal measure strata Diagenesis Type Non-Source Rock General Medium Good Carbonaceous Mudstone TOC(%) <0.75 1．5～0.75 3～1.5 >3 S1 + S2 (mg/g) <0.5 2～0.5 6～2 >6 IH (mg/g) <50 100～50 200～100 >200 A (%) <0.015 0.03～0.015 0.06～0.03 >0.06 Coal S1 + S2 (mg/g) <20 40～20 >40 IH (mg/g) <50 100～50 200～100 >200 A (%) <0.13 0.75～0.13 >0.75 Table 2 Thermal decomposition data of the Lower Cretaceous source rock samples from Hulin basin Formation Diagenesis Sample Number TOC/% S1+S2 (mg/g) IH (mg/g) Rank Qihulin Formation Carbonaceous Mudstone 3 0.75～0.82/0.79 0.58～0.67/0.61 55.49～60.57/58.46 General Coal 3 49.43～57.35/52.99 15.29～18.23/16.98 53.15～61.32/57.30 General Yunshan Formation Carbonaceous Mudstone 3 1.74～3.38/2.62 3.05～6.13/4.68 35.32～171.55/96.04 General～Medium Coal 3 53.70～64.19/59.70 100.99～156.06/125.87 153.40～287.11/207.06 Medium～Good * a-b/c ,a- Minimum，b－Maximum，c－Average Organic matter abundance.

Security control mechanism Workflow middleware based on RBAC model, the permission for users, roles, organization, operations, and resources for the division of the fine-grained, provides the perfect safety control mechanism.
System default workload statistics analysis report can be provided according to the organization, roles or personnel statistics each people at a particular time period processing task number, average/maximum/minimum processing time, the current frequency of to-do tasks.

It's ultimate goal is to use multi-sensor joint or joint operation advantage, to improve the effectiveness of the whole sensor system, eliminating the limitations of a single or a small number of sensors.
The system is easy to implement, extended the function of the software must also can be used for livestock and poultry farms, such as grain storage preservation and other biological environment and environmental monitoring and control, has strong versatility and adaptability.

Over a past few years, the existing inner and outer structure of LWA, especially the microstructure of the LWA and cement paste of concrete has been the subject of a number of research publications [2].
The starting point of the ITZ lies in the so called divider impact sourced by the aggregate particles, where the aggregates will show up locally level to the cement grains and disturb their packing.

Standardized quartz sand with a maximum grain size of 2.5 mm was used as fine aggregate.
Acknowledgements This study has been performed with the financial support of Czech Science Foundation under the project number 16-00567S and BUT student research project FAST-J-19-6016.

It can be seen that the calcareous sand retains a large number of internal pores in the marine biological skeleton.
Fig. 7 shows the grain grading curve of isotropic and K0 consolidated samples before and after CU and CD tests (taking 200kPa confining pressure as an example).

Concrete is dense, homogeneous, with max grain size up to 22 mm, on the cut surfaces of the bore a greater number of macropores within 4-6 mm has been observed.

Due to the rapid solidification of laser cladding process, there will be remained some nano-particles in the clad region because of an insufficient time for grains growth [7].
Therefore, the number of cracks can be decreased.

It makes possible to produce complex parts with quite accurate dimensions and a fine-grained structure without defects and mechanical property anisotropy [2].
Acknowledgments This study was supported by Operational Program Research and Development for Innovations co-funded by the ERDF and national budget of the Czech Republic, within the framework of project Centre of Polymer Systems (reg. number: CZ.1.05/2.1.00/03.0111).