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The influence of Ca2+、Mg2+ and NaCl content on pickling and chrome-tanning of pigskin was studied.

研究了水中Ca2+、Mg2+和NaCl的含量对猪皮浸酸铬鞣的影响。

The result indicates that multi factor line regression analysis is simple and fewer errors, thus it can be used generally and objectively, and it can reflect the instance of acid leaching.

运用回归分析理论和方法,建立了浸出率与主要影响因素间相互关系的经验公式--线性回归方程,探讨了酸法浸出浸出率与主要影响因素酸耗、时间、温度间的相互关系,并对其在酸法浸出过程中影响浸出率相关因素进行了分析。

The results of research on the factors affecting titanium tannage show that high concentration NaCl medium has larger negative effect on titanium tannage. When the NaCl concentration exceeds 5%, the titanium tanning action is reduced rapiddly. Traditional NaCl pickling is unsuitable for titanium tannage, tanning in water medium directly, the best tanning effect can be obtained, so titanium tanning can not only eliminate chrome pollution, but also diminish salt pollution. The optimum tanning conditions for HPZ-Ti tan liquor are pH3. 5, TiO〓 offer of 7. 5%(based on the weight of 65% moisture pelt), the best Bascity of tan liquor is between 30% and 50%.

以HPZ—Ti鞣液为基础,研究了不同鞣制介质,鞣制pH值,鞣剂用量和浓度,鞣液的碱度,不同提碱剂,不同的预处理和后处理等因素对钛鞣的影响,结果表明:高浓度的NaCl溶液介质对钛鞣有很大的负面作用,当介质NaCl浓度超过5%,革内钛的结合量和革的Ts明显降低,传统的高浓度NaCl浸酸工艺不适合于钛鞣,在水介质中直接鞣制效果最好,所以钛鞣不仅消除了铬污染而且大大降低了盐的污染。

The interaction between anionic polyurethane tanning agent and collagen was studied in order to get the interaction mechanism and model.

研究了阴离子型聚氨酯鞣剂与明胶、皮胶原及浸酸皮间的相互作用,探讨了相互作用机理,提出了相关的相互作用模型。

The method comprises the steps that the molybdenum bearing spent catalyst is roasted and comminuted, then the molybdenum bearing spent catalyst is leach and filter by adopting alkaline solution bearing ammonia, ammonium bicarbonate and oxyful, and the secondary roasting and leaching are performed to the solids after filtration, the twice leaching solution is acidified and the aluminum is precipitated out, then is acidified continuously to precipitate out the molybdenum in the form of molybdic acid, the molybdic acid is dissolved by using ammonia water further, the pH value is adjusted again to obtain ammonium molybdate deposition, and the ammonium molybdate product is obtained after dryness.

将含钼废催化剂进行焙烧、粉碎,然后采用含氨、碳酸氢铵和双氧水的碱性溶液浸取并过滤,过滤后的固体物进行二次焙烧和浸取,两次浸取液酸化沉淀出铝,然后继续酸化将钼以钼酸形式沉淀出来,钼酸进一步用氨水溶解,再次调节pH值获得钼酸铵沉淀,干燥后得到钼酸铵产品。

The process of three-step countercurrentleaching is presented, in the first leaching step Fe as leading impurity inthe matte is leached priorly, Co and Ni are enriched in the residue of thefirst step and then are leached in the second leaching step with a lowconcentration acid, the residue from the second step containing hardleaching Fe, Co and Ni are leached with a high concentration sulfuricacid in the third step, and Cu stays in the final resude, the leachate of thethird leaching step is diluted and divided into two parts as the leachantsto the first and second leaching step.

在此基础上,提出了三段逆流选择性浸出技术:即第一段用低酸优先浸出钴冰铜中杂质铁,将钴镍富集到第一段的浸出渣中,第二段再用低酸浸出渣中部分钴镍,第三段用高酸浸出第二段渣中难浸的钴镍铁,将铜留在最终的浸出渣中,第三段浸出液经稀释,分流,分别返回至第一段,第二段作低酸浸出介质。

The influences of ratio of liquid to solid, concentration of ethanol in solvent and leaching time on recovery of phenol and caustic soda and yield of fatty acid and sebacic acid were investigated.

在癸二酸传统生产工艺中的裂解工序后增加浸取工序回收游离碱和苯酚,通过正交试验,考察了液固比、浸取剂浓度和浸取时间对氢氧化钠和苯酚回收及对脂肪酸和癸二酸产率的影响,确定最佳回收工艺条件为:液固比2.5,浸取剂为95%的乙醇水溶液,浸取时间为15min。

Using Vis/NIR spectrometer for refrigerated silkworm eggs and Hibernated silkworm eggs to identify the place and varieties.

采用可见-近红外光谱仪对冷藏浸酸种和越年种进行了产地和品种的鉴别。

The results show that magnesium and aluminum theoretically can be thoroughly dissolved from the blast furnace slag by diluted sulfuric acid pretreatment on the blast furnace slag even if the ended concentration of sulfuric acid is 0.001mol/L, while the titanium basically could not be dissolved. Therefore it is theoretically indicated that the separation of the magnesium and aluminum from the slag with the least titanium loss by diluted sulfuric acid pretreatment is possible.

结果表明,采用稀硫酸对高炉渣进行预处理,当终酸浓度即使为0.001mol·l~(-1)时,镁、铝理论上也能全部被酸浸出,而钛在0.001 mol·l~(-1)的酸浓度条件下基本不被浸出,从而从理论上可以说明对高炉渣采用稀酸预处理可以很好的将炉渣中的镁、铝等杂质分离出来,而钛极少被浸出。

Cooked using the process of German companies BASF professional fur cooked reagents, using the most advanced production of chrome rubbing the skin and hair of a centralized processing, the main process are: skin pretreatment ---- 24小时Baptist acid -- Paper plates - rubbing the oil to heat the system ---- skim softening --------- forming fat -- stain-kneading fine - hot - such as dozens of fine cut Road, skin color into the finished product production Section, according to a fineness of wool ratio, and then after cutting, stitching, shape, and quality inspection procedures can only be a few dozen packaging factory.

熟制过程使用德国BASF公司的专业裘皮熟制试剂,采用国际最先进的铬揉生产法,对皮和毛进行集中统一化的处理,主要工艺有:原皮预处理----24小时浸酸---皮板去油---揉制----高温脱脂---成型---软化---加脂—复揉---染色---精烫--精剪等数十道,成品色皮进入成品生产工段后,还要根据毛质细度进行配比,再经过裁剪,缝合,成型,及质量检验等几十道工序才可以包装出厂。

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