Comprehensive utilization of silica raw material of the upper and Mid-Amur River basins

2011 ◽  
Vol 47 (4) ◽  
pp. 522-530 ◽  
Author(s):  
V. S. Rimkevich ◽  
L. P. Dem’yanova ◽  
A. P. Sorokin
2012 ◽  
Vol 524-527 ◽  
pp. 965-968 ◽  
Author(s):  
Dan Liu ◽  
Shu Ming Wen ◽  
Yong Jun Xian ◽  
Hai Ying Shen ◽  
Shao Jun Bai ◽  
...  

A technology of “arsenic removing- sulfuric acid producing- residuals for ironmaking” is proposed for comprehensive utilization of pyrite with high content of arsenic. The effect of roasting temperature and time on arsenic removing was investigated. The arsenic removed residuals obtained under the optimal arsenic removed conditions, was used to be proceeded for sulphur volatilization test. The results demonstrate that final residuals with 63.53% of Fe can be used for steel industry. This technology can be used to fully utilize sulphur and produce high quality concentrate as iron-bearing feed for steel industry, which will help to reduce the pollution of arsenic and extend raw material sourcing for Chinese steel industry.


2021 ◽  
pp. 2150075
Author(s):  
YA GAO ◽  
DI SUN ◽  
CHENGLIANG HAN ◽  
JUNJUN HUANG

In this work, comprehensive utilization of phosphogypsum was developed. Methylene blue (MB) in aqueous solution was adsorbed by waste phosphogypsum (PG), and then the MB-adsorbed PG was used to the fabrication of PG bricks. The adsorption mechanism and the strength of PG bricks also have been studied. The dye maximum capacity of PG monolayer adsorption was found to be 0.2[Formula: see text]mg/g. The kinetic behavior is more accordant with the intra-particle diffusion equation. The MB-adsorbed PG could be effectively used as a raw material for building material. The mechanical properties of PG bricks were little different from the one of the water-washed PG bricks. The 2h-flexural and compressing strengths were about 2.8[Formula: see text]MPa and 6[Formula: see text]MPa, the dry-flexural and compressing strengths were about 5[Formula: see text]MPa and 20[Formula: see text]MPa.


2013 ◽  
Vol 773 ◽  
pp. 969-972
Author(s):  
Xiao Rong Zhao ◽  
Yu Hong Luo ◽  
Na Na Du ◽  
Ying Ping Huang

In China countryside, the government policies encouraging individual farmers to construct biogas digester were strongly promoted to take clean biogas as the main household energy consumption, replacing the traditional way of biomass combustion energy. The construction and application situation of biogas digester since the new energy policies implementation was surveyed with the method of questionnaire survey, discussed and analyzed in detail with classification analysis method. The feedback of survey reports shows that three important factors including subsequent technical services, the shortage of financial support and insufficient fermentation raw material, have badly hampered the extensive construction of biogas digester and comprehensive utilization of biogas in different fields.


Author(s):  
V. E. Medvedev ◽  
I. V. Filatova

We analyze new finds from a Neolithic dwelling 1 from excavation II at the Suchu Island, on the Amur River. We analyzed an assemblage of 3788 lithics and ceramics, along with field records housed at the Institute of Archaeology and Ethnography of SB RAS. The article continues the series of publications in this journal, outlining the findings at Suchu—one of the key Neolithic sites in Northeast Asia. Dwelling 1 is a 0.8-meter-deep round semi-underground structure dug into the sandy loam. In its center, there was a hearth, and walls lacked ledges. On the floor, numerous pits from posts that had supported the roof were found. The stratigraphic and horizontal position of finds was registered; artifacts were analyzed through morphological typology, petrographic and X-ray analysis, and microscopy. Our analysis reveals hunting, fishing, and butchering tools, those for processing stone, wood, and bone, those for plant processing, and digging tools. Various sedimentary and igneous rocks were used as raw material. In terms of cultural chronology, standard pottery was mostly attributed to the Lower Amur cultures (Malyshevo and Voznesenovskoye), while some was apparently manufactured by immigrants. Principal technological, constructive, morphological, decorative, and functional characteristics of each ceramic type were assessed. Unusual artistic and ritual items clustered in dwelling 1 of the Malyshevo type (late 5th to early 4th millennia BC) are suggestive of a domestic shrine.


2012 ◽  
Vol 496 ◽  
pp. 259-262
Author(s):  
Yuan Rui Wang ◽  
Feng Juan Liu ◽  
Guo Jun Qiang ◽  
Jiang Lei Hu

The optimal conditions of prepared magnesium hydroxide using dolomite as raw material were systematically explored by carbonization. The influence between the factors of reactions and the extraction rate of magnesium hydroxide was studied. The structure and composition of product were analyzed by Fourier transform infrared spectrometer, X ray diffraction and electron microscopy. In the conditions, the extraction rate could be up to 90.32%, and its crystal was a hexagonal-type. This method has many kinds of advantages, such as simple operation, low costs of production, eliminating the environmental pollution and comprehensive utilization of by-products.


2021 ◽  
pp. 1040-1053
Author(s):  
Nickolai A. Bochkarev ◽  
Elena I. Zuykova ◽  
Lyudmila A. Pestryakova ◽  
Lena A. Ushnitskaya ◽  
Evgeny S. Zakharov ◽  
...  

The results of morphological and genetic analyses of forms/species of the Coregonus lavaretus pidschian (Gmelin, 1789) complex from the Indigirka and Kolyma river basins are presented in the context of there being recent postglacial speciation events. It has been found that the studied whitefishes belong to the sparsely rakered and low lateral-line forms and have previously been described as Coregonus lavaretus pidschian n. jucagiricus Drjagin (Berg), 1932. Based on these characters, this whitefish does not differ from most Arctic whitefish populations (in particular from Coregonus lavaretus glacialis Kirillov, 1972). Analysis of variability of the ND1 gene (mtDNA) showed that whitefishes from the Indigirka and Kolyma basins belong to a distant phylogenetic lineage, which is significantly different from all previously studied whitefish lineages from the Ob, Yenisei, Lena, Anadyr, and Amur river basins. Analysis of variability of the ITS1 fragment (nDNA) showed that all studied forms/species (from Ob River to Amur River basins), including C. l. pidschian n. jucagiricus, have a tandem arrangement of two identical nucleotide fragments and very similar nucleotide composition of the ITS1 region. Based on contemporary data, this phylogenetic lineage of the C. pidschian complex could be considered a young postglacial allopatric species.


2015 ◽  
Vol 375 ◽  
pp. 72-83 ◽  
Author(s):  
Nora Viviana Franco ◽  
Natalia Andrea Cirigliano ◽  
Lucas Vetrisano ◽  
Pablo Ambrústolo

2013 ◽  
Vol 781-784 ◽  
pp. 2051-2054
Author(s):  
Zhong Xu Dai ◽  
Fa Hua Li ◽  
Zhao Hong Gong ◽  
Quan Bin Liao

The glyphosate solution, sodium chloride and phosphate solid are separated concurrently by using different mixed solvent extraction processing from glyphosate production wastewater. Among them, ethanol-acetone is the best solvent extraction agent. In glyphosate solution after treatment, glyphosate content is 6.14 %, meanwhile, the content of sodium chloride and phosphate is rather low. So, it can be used as glyphosate agent production. The content of sodium chloride is up to 98 % after recrystallization, which can be as the raw material of chlor-alkai production. When the mother liquor of recrystallization combined with the original wastewater, the glyphosate can be close to the maximum recovery.


Zootaxa ◽  
2010 ◽  
Vol 2693 (1) ◽  
pp. 49 ◽  
Author(s):  
VALENTINA A. TESLENKO ◽  
PETER ZWICK ◽  
NATALYA V. BAZOVA

Filchneria mongolica (Klapálek, 1901) is redescribed and reillustrated from the female holotype and fresh material collected in the Selenga and Amur River Basins of Russia and Mongolia. Its relationship with close relatives is discussed.


2012 ◽  
Vol 524-527 ◽  
pp. 2004-2010
Author(s):  
Shao Jun Bai ◽  
Shu Ming Wen ◽  
Jiu Shuai Deng ◽  
Dan Liu ◽  
Yu Chen

A new technology of pellet production-drying-chloridizing roasting is proposed for comprehensive utilization of sulfuric acid residue with high content of copper, a common by-product in vitriol industry. The sulfuric acid residue, containing 60.27% Fe, and 1.61% Cu, was pelletized with addition of 5% bentonite in pan pelletizer. Green balls after drying with 2.3% of water retention were roasting at 1100 °C for 30 min with 5 wt % of CaCl2addition in tube furnace. The results demonstrate that pellets with 60.58% of TFe, a copper volatite ratio of 97.8% were obtained with simultaneous decrease in the copper content down to 0.035%. Key technique is that CaCl2reacts with copper compounds and the chloride can be volatilized at moderate temperatures. This new technology can be used to fully utilize sulfuric acid residue and produce qualified concentrate as iron-bearing feed for steel industry, which will help to solve the pollution of sulfuric acid residue and extend raw material sourcing for Chinese steel industry.


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