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双语推荐：氯化镁

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通过水泥加固不同含量的氯化镁污染土室内28 d抗压强度、X射线衍射(XRD)和微观扫描电镜试验(SEM),研究了氯化镁对水泥土的早期强度影响机理。XRD分析结果表明:氯化镁参与反应生成的M-S-H、M-A-H、氯化钙结晶、轻质氯化镁结晶和水化氯铝酸钙等产物对水泥土产生分解与结晶的复合作用;SEM图象分析表明:氯化镁使水泥土的孔径分布发生改变,当氯化镁含量较低时,水泥土中的水泥水化产物与结晶物将颗粒连结在一起,形成较强的结构联结,使其孔隙率变小,对水泥土的强度增长有利;随着氯化镁含量增大,土颗粒周围的凝胶物被分解,使水泥土的孔隙率增大与胶结程度下降,对水泥土的强度不利。
In order to study the influence of the magnesium chloride in the polluted soils on the early strength of cemented soils after 28 days, unconfined compression tests, X-ray Diffraction (XRD) phase tests and scanning electron microscope (SEM) tests are employed to study the mechanism of cement-reinforced soils contaminated by different content magnesium chlorides. The strength test results show that the compressive strength of the cemented soils decreases with the increase of the content of magnesium chlorides. The value reaches its peak when the content is 1.5 g/kg, while it is the lower when the content is greater than 1.5 g/kg. Chemical products are analyzed by means of the XRD tests, and the test results show that chemical products become more, such as M-S-H, M-A-H, CaCl2·6H2O, Mg2(OH)3Cl·4H2O, C3A·CaCl2·12H2O, after the participation of the magnesium chlorides in chemical reactions. Those chemical products play the role of decomposition and crystallization composite act

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氢氧化镁制备方法主要包括：白云石法,菱镁矿法,水镁石法,氯化镁法（氢氧化钙沉淀法、氨沉淀法、氢氧化钠沉淀法）,六氨氯化镁-氯化镁法。其可应用于水处理、烟气脱硫等领域,还可用作无机阻燃剂及制备氧化镁系列产品的前驱体。
Methods for preparation of magnesium hydroxide mainly include dolomite method , magne-site method, brucite method, magnesium chloride method (calcium hydroxide precipitation method, am-monia precipitation method , sodium hydroxide , magnesium chloride precipitation method ) , and hexam-moniated magnesium chloride -magnesium chloride method .Magnesium hydroxide can be used in water treatment, flue gas desulfurization , etc., and can also be used as inorganic flame retardants and a pre-cursor of magnesium oxide series products .

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以氯化镁为增塑改性剂,采用流延法制备了增塑改性聚乙烯醇薄膜(PVAL)。主要研究了氯化镁用量、反应温度、反应时间、干燥温度对改性PVAL薄膜耐水性能的影响。结果表明,当氯化镁与PVAL的质量比为0.2、反应温度为70℃、反应时间为40 min、干燥温度为70℃时,所得改性PVAL薄膜的耐水性能最好。
The plasticized poly(vinyl alcoho1)(PVAL) films were prepared by the tape casting and using magnesium chloride as the plasticizer. The effects of the magnesium chloride dosage,the reaction temperature,the reaction time,the drying temperature on the water resistance of modified PVAL film were studied. The results show that the water resistance of the film is the best when the mass ratio of magnesium chloride and PVAL is 0.2,the reaction temperature is 70℃,the reaction time is 40 min,the drying temperature is 70℃.

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研究了用硫酸及盐酸-氯化镁体系从锌银渣中浸出银和锌。先用稀硫酸浸出锌银渣中的部分锌、铁,使银、铅富集在浸出渣中,再硫酸浸出渣用盐酸-氯化镁溶液浸出银、锌,然后用铁板置换回收浸出液中的银。考察了氯化镁浓度、浸出温度、浸出时间、液固体积质量比及其他因素对银浸出率的影响。试验结果表明,在最佳条件下,银回收率为85.26%,锌回收率为89.46%。
Leaching of zinc and silver from zinc-silver residue in sulfuric acid and hydrochloric acid-magnesium chloride system was studied .Zinc-silver residue was leached first using dilute sulfuric acid . The leaching solution was returned to leach zinc .The leaching residue was leached using HCl-magnesium chloride solution ,silver in leaching solution was replaced by iron plate .Influences of magnesium chloride concentration ,leaching temperature ,leaching time ,ratio between liquid volume and solid mass ,and others fractors on leaching rate of silver and zinc were investigated .The experimental results show that the recovery rate of silver and zinc are 85 .26% and 89 .46% , respectively under the optimum conditions .

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采用差示扫描量热法(DSC)研究了EtOH/MgCl2的摩尔比在1.5~2.8的氯化镁乙醇醇合物的结构。研究表明,该区间的氯化镁乙醇醇合物存在两种稳定的组分,经推断这两种组分分别是MgCl2?2.8EtOH和MgCl2?1.5EtOH,它们的熔融峰值分别在115℃和155℃附近,该区间的氯化镁醇合物是由这两种稳定的组分组成的混合物。另外,氯化镁醇合物的熔点对水分很敏感,微量的水分会使醇合物的熔点降低。热分析结果显示,在MgCl2?2.8EtOH醇合物中存在微量的水分时会在100℃形成特征峰。对具有微量水分且EtOH/MgCl2的摩尔比在1.55~2.64的氯化镁醇合物进行减压脱醇时,首先减少的是MgCl2?2.8EtOH组分,其次是MgCl2?2.8EtOH与微量水分形成的组分,并且没有水分被脱除掉。
Magnesium chloride–ethanol adducts (MgCl2?nEtOH) prepared over a composition range of n=1.5 to 2.8,were studied with differential scanning calorimetry. These adducts comprised of two stable compounds,MgCl2?2.8EtOH and MgCl2?1.5EtOH,showing endothermic peaks at 115℃ and 155℃ respectively. In addition,the melting point of the magnesium chloride–ethanol adduct which was very sensitive to water would decrease if trace moisture was present in the adduct. And the characteristic peak of the adduct containing trace moisture and MgCl2?2.8EtOH was observed at 100℃. Moreover,during the dealcoholation of the adducts containing trace moisture with EtOH/MgCl2 molar ratio from 1.55 to 2.64,pure MgCl2?2.8EtOH was removed firstly and then the compound formed by trace moisture and MgCl2?2.8EtOH was removed. However,water was not removed all the way.

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为了改善铝酸钙水泥结合浇注料的高温体积稳定性，以 w （Al2 O3）≥99．5％的板状刚玉为骨料， w（Al2O3）≥99．7％的活性Al2O3微粉和板状刚玉细粉（≤0．044 mm）为基质，以铝酸钙水泥Secar 71为结合剂，添加适量氯化镁制备铝酸钙水泥结合浇注料，分别在1100℃3 h和1450℃3 h进行热处理，测定浇注料试样的常温物理性能，并分析基质试样的物相组成和显微结构。结果表明：氯化镁的加入会导致浇注料经高温处理后的体积密度下降，显气孔率升高，并降低浇注料高温处理后的力学性能；但是，含氯化镁的浇注料经高温处理后的线膨胀较小。通过显微结构分析发现，在含氯化镁的浇注料基质中有发育良好的板片状CA6，氯化镁分解所产生的孔隙可以为高温下CA6的形成提供部分可膨胀的空间，从而降低CA6形成所带来的体积膨胀，有利于改善浇注料经高温处理后的体积稳定性。
To improve the volume stability at high tempeartures,calcium aluminate cement bonded castables were prepared using tabular alumina (Al2O3≥99.5 mass%)as aggregate,reactive alumina micropowder (Al2O3≥99.7 mass%),and tabular alumina fines (≤0.044 mm)as matrix,calcium aluminate cement (Se-car 71)as binder,and magnesium chloride as additive.The castables were fired at 1 100 ℃ and 1 450 ℃for 3 h,respectively.Then physical properties of the castables were tested,and phase composition and mi-crostructure of castable matrix specimens were analyzed.The results show that the castable with magnesi-um chloride has the decreased bulk density,the increased apparent porosity and the decreased mechani-cal properties and linear expansion after firing at high temperatures.It is found in the microstructure that the well developed tabular CA6 crystals disperse in the matrix of the castable with magnesium chloride.There-fore,these voids generated from the decomposition of magnesium chloride i

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分析了海绵钛残留氯化镁对钛及钛合金熔铸的影响。在钛及钛合金铸锭生产过程中,由于氯化镁吸湿现象导致压制的电极块出现白色析出物、一次锭表面有潮湿的黑斑以及真空系统内沉积物水化等现象。残留氯化镁对真空熔炼及设备的危害主要有:①增大发气量,降低熔炼真空度;②使铸锭气体杂质含量偏高,气孔增加;③使铸锭中残留的高熔点颗粒增加;④腐蚀真空系统,降低设备寿命。最后对出现的问题,提出了相应的预防措施。
The influence of residual magnesium chloride in sponge titanium on casting of titanium and its alloys has been studied .The results show that during the casting process , white precipitates were found on the electrode surface , while humid black spots appeared on the primary ingot and precipitates inside vacuum system hydrated , due to the moisture absorption of magnesium chloride .Damages to the vacuum system and equipments were mainly as follows:①increased gas generation to lower vacuum of the system;②more gas impurities in ingots , then higher porosity;③in-creasing retained particles with high melting point; and ④ vacuum system corrosion to decrease life span of equipments .And measures were raised to prevent occurred problems .

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分别利用氯化镁、石膏和氯化镁、瓜尔胶复配凝固剂制作豆腐,瓜尔胶降低了氯化镁制作豆腐的硬度,但复配凝固剂制作的豆腐和石膏豆腐有相似的质构特性,红外光谱对三种豆腐粉末测定的结果表明:三种凝固剂对豆腐中蛋白的二级结构并没有影响;在37℃下研究三种凝固剂对豆浆黏度变化的影响,发现瓜尔胶提高了凝固过程第一阶段的速率,但降低了第二阶段凝固过程的速率。瓜尔胶通过改变豆浆的凝固速率影响了豆腐的凝胶结构和质构特性。
Magnesium chloride based coagulants were compared with traditional gypsum for coagulating tofu. The hardness of magnesium chloride coagulated tofu decreased significantly after adding guar gum,being much closer to gypsum coagulated tofu. The texture profile of tofu coagulated by the mixture coagulant was similar as tofu prepared with gypsum. The results of FTIR shows the coagulants had little effect on the secondary structure of denatured protein during the coagulation process,viscosity results of soymilk coagulated with these three coagulants at 37℃ indicated guar gum promoted the coagulation rate in the first stage,whereas the rate decreased in the second stage. The change of coagulation rate of soymilk resulted from adding guar gum modified the network and the texture profile of the tofu prepared with MgCl2.

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为进一步研发高效阻化剂以阻止煤炭自燃,对阳煤煤样分别添加4种不同浓度的阻化剂后进行了程序升温氧化法测定,通过对30~220℃升温过程中生成的一氧化碳气体指标以及ICO(产生的一氧化碳与消耗氧气的比值)的对比分析,得出了4种不同浓度的阻化剂对阳煤煤样自燃的阻化效果。结果表明,阳煤煤样在程序升温的不同温度阶段,浓度为15%的氯化镁阻化效果最佳,阻化率平均可达68%以上,180℃后,氯化镁的阻化率能达到78%,从而验证了15%的氯化镁为本次试验的优选阻化剂。试验结果可为阳煤五矿高效阻化剂的配制提供相关依据和参考。
For further research and development of highGefficient inhibitor to prevent the coal spontaneous combustion,the coal samples from Yangquan Coal Industry Group respectively addG ed with 4 different concentrations of the inhibitor were examined by heating oxidation?By comG parison of CO produced and ICO (the ratio of produced carbon monoxide to the consumed oxyG gen)during the heating process at 30~220°C,the inhibiting effects of 4 different concentrations of the inhibitor on the spontaneous combustion of coal samples were obtained? The results showed that the concentration of 1 5 % magnesium chloride possesses the best inhibiting effect in the whole heating process,with average inhibiting rate over 68 %?Above 180°C,its inhibiting rate can reach 78 %,suggesting the 15 % of magnesium chloride being the preferred inhibitor for this experiment?Experimental results can provide the basis and the reference of the preparation of highGefficient inhibitor for No?5 Coal Mine in Yangqua

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目的：观察三磷酸腺苷二钠氯化镁治疗支气管肺炎所致心肌受损的临床疗效。方法将172例支气管肺炎并发心肌受损患儿随机分为观察组78例和对照组94例,两组均抗感染及对症支持等常规治疗,观察组用三磷酸腺苷二钠氯化镁营养心肌,对照组用二磷酸果糖营养心肌,疗程均为1周。比较两组患儿治疗前后CK-MB及cTnl的变化。结果治疗1周后,CK-MB和cTnl的检测值较治疗前均降低,但观察组降低更显著(P0．05),而cTnl的阳性率差异有统计学意义(P<0．05)。结论三磷酸腺苷二钠氯化镁治疗支气管肺炎所致心肌受损,疗效好。
Objective To observe the therapeutic effect of adenosine disodium triphosphate and magnesium chloride in the treatment of children with myocardial injury induced by bronchopneumonia. Methods 172 children with myocardial injury induced by bronchopneumonia were randomly divided into two groups. All children were given antibiotics and the conventional treatment. 78 cases as the experimental group were given adenosine disodium triphos- phate and magnesium chloride for injection additionally. 94 cases as the control group were given sodium fructose diphosphate for injection additionally. The data of CK-MB and cTnl were compared between the two groups after one week. Results 1 week after the treatment, the value of CK-MB and cTnl reduced in the two groups, and the de-crease was more pronounced in the experimental group than in the control group (P 0. 05). The positive rate of cTnl was obviously lower in the experimental group than in the con-trol group (P<0. 05). Conclusion The tre

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