The best reagent parameter are the ore times 1.8% H2O2(30%) and the pretreatment time is 36 hour and the NaCN concentration is 0.9‰ and the best leaching time are 48 hour and the best grinding fineness are-0.125mm. The achieved 93.18%.
Experimental results show that such kind of mineral is treated through differential flotation under the selected reagent condition,obtaining a lead concentrate containing 57.33% Pb with recovery of 94.08%,and 2 201.72 g/t Ag with recovery of 83.14%;
On the basis of the separation test of the artificial ore mixture by flotation, a reagent regime is suggested for separating rhodochrosite from siderite where OP-15 is used as collector and Na_2SiO_3 as depressor, The microscopic nature is discussed which is involved in the selective collection of rhodoehrosite by OP-15 and selective depression of siderite by Na_2SiO_3 in the mineral-depressor-collector system.
Green- house testing showed that a flumorph 20% wettable powder controlled the causal agent of pepper blight with an EC90 of 39.51 ìg/ml, making it slightly more active than the dimethomorph 50% WP check treatment (EC90 43.38 ìg/ml).
the follows is index through using flowsheet of concentrating suphurate before oxidate and adapt agent system:lead grade of lead concentrate is 56.59%,lead recovery of lead recovery is 89.91%,zinc grade of zinc concentrate is 40.13%,zinc recovery is 75.19%,silver grade of lead concentrate is 1 539 g/t,silver recovery in lead concentrate is 78.16%.
The technology parameter is also defined: Htr(tinie water staying in tank) with 2.5-3.Oh,gas-water ratio with 2.5 - 3.5:1,capacity of medicament added in with 20-30mg/l,the mud consistency with 7-10g/l, Precipitation time with 1.2 - 1.5h.
Under the expected fruiting index of 90%, the proper simulated concentration extents of different chemicals in mixtures were: Na2B4O7 0.155 8% to 0.170 0%, GA3 15.58 to 16.09 mg/L, H2NCONH2 0.121 0% to 0.131 3%, NAA 15.07 to 16.57 mg/L, 2,4-D 7.916 to 8.571 mg/L.
The treating with chemicals and their concentration were 16.7% CaCN2, 0.5%~2.0% H2CN2, 0.5%~2.0% H2CN2 +1.0%Tween80.The treatment on Jan.10 (1.0%H2CN2+ 1.0% tween 80) had the best dormancy breaking efficiency.
The results show that the treatment 10 days before blooming with 10 mg/kg chemicals was 35.2% longer than the control,while the treatment 5 days before blooming with 5 mg/kg chemicals was 21.9% longer.
Effective sequence of the five chemicals in root-irrigating test is: 500-fold solution of 20% bismerthiazol WP > 500-fold solution of 30% copperchloride SC > 800-fold solution of 20% bismerthiazol WP > 800-fold solution of 30% copperchloride SC > 500 mg/L agro-streptomycin. The highest yield per 667 m2 lies in disposal of 500-fold solution of 20% bismerthiazol WP.
and auxiliary, 3.0. With this set of chemicals a super-heavy crude oil/water (70∶30) emulsion of viscosity (at 30℃ and 28.38 s~(-1)) 40.0 mPa·s is prepared; with 1.0 g/L stabilizer introduced additionally, the viscosity of the O/W emulsion formed is decreased to 30.0 mPas;
The composite film was prepared on glass fiber with the water glass as binders and dilute H2SO4 solution as solidifying reagent.
Glutaric dialdehyde was prepared by the addition-hydrolysis reaction of benzimidazolium salt with saturated dihalide as the di-Grignard reagent.
In this paper, a new preparation method of 3,5-dinitrobenzoyl-bonded silica gel stationary phase (DNB) for HPLC was developed by using N-(β-aminoethyl)-γ-aminopropyl-methyldimethoxy silane as coupling reagent.
The influences of the dispersion reagent, the alkalinity and the calcination temperature on the surface morphology of nanopowders, and the electric conductivity were discussed.
Activated carbon was prepared from the sewage sludge of municipal wastewater treatment plant by chemical activation (activation reagent is ZnCl2) and was used for the adsorption of dye (reactive brilliant red K-2BP).
The details of the synthetic sequence followed for the preparation of all these compounds having almost all the structural features required for a compound to act as a potent insulin sensitizing agent are reported.
9-O-methylfusarubin was isolated from a novel source, Fusarion oxysporum, and evaluated for its phytotoxic and chlorotic inducing properties in plants as well as its potential as an antineoplastic agent.
The enantiomeric excess of the reduction product was up to 83.2% with cyclohexane as the solvent, the molar ratio of ligand: reductive agent: β-acetonaphthalene is 0.04:1.6:1, and 72-hours reaction time at 0°C.
A highly cross-linked structure was formed in both the cores and the shells by using a cross-linking agent, which could prevent the migration of hydrophobic PS shells to the inside of particles.
Benzoxycarbonyl chloride was selected as amino group protection agent, and the yield was elevated by replacing sodium bicarbonate with triethyl amide as the acid's neutralizer.
The subacute myelo-optico-neuropathy reported in recent years is attributed by some to the medicament itself and by others to the presence of a virus.
SFI post-treatment group: the medicament sequence order was reversed from that of pre-treatment group.
The repairing and regeneration of peripheral nerves is a very complex biological and cytological process, its mechanism is unclear so far, and thus results in the lack of specific and effectual therapy and medicament.
To observe the therapeutic effect of acupuncture plus medicament in the treatment of prostatic hyperplasia, Zhibian (BL 54) and Zhongji (CV 3) were deeply punctured with elongated needles and enema was applied with self-prepared medicinal herbs.
Ueber die Schwankungen der vom Diabetiker ausgeschiedenen Kohlens?ure bei wechselnder Di?t und medicament?ser Behandlung
These represent the fundamentally physical, photochemical, and photocatalytic reactions of protic chemicals covered with metal-oxides.
Usually, the cells are treated with chemicals when detecting apoptosis.
A year-long investigation on odor chemicals of drinking water in Shanghai demonstrated that in the summer, there was a serious odor problem induced by a high concentration of 2-MIB.
A colorimetric rapid assay for estimating the biocide potential of various chemicals towards metal- biocorrosive and petroleum-product-degrading microbes was developed based on the reducing potential of live microbial cells.
Quantitative Assessment of the Biocidal Activity of Chemicals Using Soil Microbial Associations