查询词典 chrome tanning

A series of experiments of chrome tanning of leather making using CO 2 Supercritical fluid technique were conducted.

利用自行设计制造的CO2 超临界流体装置实施铬鞣操作进行了探索性研究，运用正交实验法找到了在SCF -CO2 条件下实施铬鞣的最佳工艺条件为：浴温 40℃，压力 1 2MPa，时间 2 。5h ，粉状铬粉剂用量 6 %。

Using H2SO4 as acidulant,chromic sulfate with high purity was obtained by crystallization,which was applied to leather industry as chrome tanning agent .

将电镀废水中的六价铬还原成Cr，用化学沉淀法和絮凝法将其转化为Cr3沉淀，通过硫酸酸化，结晶为高纯硫酸铬，作为皮革工业的铬鞣剂。

The methods to determine the chrome content of waste liquor of modified two-bath chrome tanning process were studied by chemical analysis.

文摘：研究了变型二浴法的鞣制废液中，铬含量测定的化学分析方法。

The presented work deals with the application of chrome cake to prepare chrome tanning liquors.

本文研究工作主要是关于用铬饼制备铬鞣液及其应用。

There exist some unassailable problems in traditional chrome tanning, such as low exhaustion of chrome, salt pollution from pickling, and time-consuming process, etc.

传统浸酸铬鞣存在着一些不容忽视的问题，如：铬的吸收率低，浸酸时带来的盐污染，鞣制周期长等。

The results have indicated that chrome tanning agent with good tanning property and high utilization ratio can be gotten by selecting proper alcohol as reducing agents. This is a forceful promotion to tanning ecology.

研究结果表明，选择适当的醇作还原剂，可制备出鞣革性能优异，利用率高的铬鞣剂，这对实现制革生态化是一个有力的促进。

In two-stage chrome tanning process,the chrome absorptivity can be increased from 86.80%to 99.09%,and the chrome fixation can be increased from 76.07%to 90.21%by the same treatment.

由于胶原对铬的吸收率和固定率的提高，常规铬鞣时可将标准铬粉的用量由传统的6%减少到4%，。

Collagen has been treated with DHTPA and then tanned with chromium complexes,and the effect of DHTPA on chrome tanning properties has been investigated by determining the chrome absorptivity and fixation as well as the physical properties of the crust.

用DHTPA对胶原改性后进行铬鞣，通过铬的吸收率、铬的固定率、坯革物理机械性能等指标的测定，研究了DHTPA对胶原铬鞣性能的影响。

The results have indicated that chrome tanning agent with good tanning propertyand high utilization ratio can be gotten by selecting proper alcohol as reducing agents.This is a forceful promotion to tanning ecology

研究结果表明，选择适当的醇作还原剂，可制备出鞣革性能优异，利用率高的铬鞣剂，这对实现制革生态化是一个有力的促进。

Because of the enhancement in chromium absorptivity and fixation,the dosage of normal chrome powder can be reduced from 6%to 4%in conventional process,and can be reduced from 6%to 3%in two-stage chrome tanning process,and thus the chrome absorptivity and fixation can be enhanced further.

两步铬鞣时可将标准铬粉的用量由传统的6%减少到3%，这时铬的吸收率和固定率还会进一步提高。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。