青藏地区钠硼解石复合矿制取硼砂中间试验

以钠硼解石复合矿为原料，用工业碳酸钠、工业碳酸氢钠二次碱解制取硼砂，得到符合GB／T537-97优等品指标的硼砂产品，分解率≥98％，收率≥90％。     

硼砂型膏剂渗硼剂的研制

使用硼砂作为渗硼膏剂的供硼剂，对7种活化剂的活化效果进行了研究，发现活化剂的类型和自身熔点的高低对活化效果有影响，氟化物活化效果好于氯化物，熔点高的活化剂活化效果较好，几种活化剂配合使用渗速明显高于单独使用一种活化剂的渗速，利用正交试验法，确定了CaF2,MgCl2和Na3AlF6三种活化剂的最佳配比，所研制的MSG膏剂渗速快，渗层质量好，对碳钢和低合金钢均有良好的渗硼能力。     

硼泥陶粒混凝土用于低温热水地板辐射供暖

目的 研究硼泥陶粒混凝土作为低温热水地板辐射供暖系统蓄热层的作法及其性能．方法 辽化湖畔花园小区住宅楼工程中，用硼泥陶粒混凝土代替豆石混凝土作低温热水地板辐射供暖系统蓄热层，取暖期内对试验工程进行温度监测实验．结果 试验工程混凝土试块强度平均值为27.5MPa，合格率为100％，厚度均在允许偏差内，合格率100％；外观鉴定混凝土表面无裂缝，并根据温度监测结果画出了取暖期内每天温度随时间变化的曲线图．结论 用硼泥陶粒混凝土作低温热水地板辐射供暖系统的蓄热层，与用豆石混凝土相比，减轻了建筑物自重、减缓了传热速度、增强了房间的热稳定性．     

Termite Resistance of MDF Panels Treated with Various Boron Compounds

In this study, the effects of various boron compounds on the termite resistance of MDF panels were evaluated. Either borax (BX), boric acid (BA), zinc borate (ZB), or sodium perborate tetrahydrate (SPT) were added to urea-formaldehyde (UF) resin at target contents of 1%, 1.5%, 2% and 2.5% based on dry fiber weight. The panels were then manufactured using 12% urea-formaldehyde resin and 1% NH₄Cl. MDF samples from the panels were tested against the subterranean termites, Coptotermes formosanus Shiraki. Laboratory termite resistance tests showed that all samples containing boron compounds had greater resistance against termite attack compared to untreated MDF samples. At the second and third weeks of exposure, nearly 100% termite mortalities were recorded in all boron compound treated samples. The highest termite mortalities were determined in the samples with either BA or BX. Also, it was found that SPT showed notable performance on the termite mortality. As chemical loadings increased, termite mortalities increased, and at the same time the weight losses of the samples decreased.     

硼镁矿常压法制取硼砂的工艺研究

介绍了西藏硼镁矿采用常压制取硼砂的方法 ,着重讨论了影响反应的几个因素 ,实验结果显示反应时间 2 5h ,反应温度沸腾状态 (约 10 6℃ ) ,液固比 3～ 3 5 ,碱量为理论量的 110 % ,碳酸氢钠采用分批投料 ,常压操作 ,碱解率 98 8% ,回收率 95 %以上。考察了工业规模装置下的运行状况 ,结果表明 ,矿石碱解率 96 %以上 ,产品回收率达 85 %以上     

以硼砂为助熔剂使用含钛高炉渣制备发泡陶瓷

以紫色页岩、含钛高炉渣为原料,硼砂为助熔剂,碳化硅为发泡剂制备发泡陶瓷,通过对气孔率、闭孔率、孔径分布、表观密度、抗压强度、导热系数进行测量,研究了原料配比和硼砂添加量对发泡陶瓷气孔结构和物理性能的影响。结果显示:当原料中含钛高炉渣比例增加时,试样的平均孔径增加,气孔均匀性下降;硼砂的加入会使试样抗压强度降低,孔隙率增大,导热系数变小。当发泡陶瓷原料配比(质量分数)为高炉渣30%,页岩70%,添加4%的硼砂和0.2%的碳化硅时,制备出的发泡陶瓷的表观密度为0.374 g·cm^-3,导热系数为0.121 W·m^-1·K^-1,抗压强度为2.59 MPa,满足建筑外墙保温发泡陶瓷的要求。发泡陶瓷主要晶相为斜长石,同时伴有部分透辉石、石英和少量的铁板钛矿。     

防火包装纸的试制

采用硼酸、硼砂作阻燃剂和淀粉胶粘剂混合生产防火包装纸。包装纸原料采用100％未漂硫酸盐针叶木浆,阻燃剂比例为硼酸：硼砂：淀粉=32：48：20,浓度25％,进行表面施胶,成品质量达到国家标准要求。     

Investigation of surface-modified anhydrous borax utilisation in raw glazes

This study aims to determine the feasibility of preparing ceramic glaze using a surface-modified borate, which contributes boron to the composition without the need of a fritting process. In this context, surface modification of anhydrous borax powders (ABP) with magnesium stearate (MgSt) via dry powder coating is investigated. The surface modification of ABP with MgSt is optimised by employing modifier dosage of 0.5, 1, and 2?wt% and coating periods of 30, 60, and 120?min. The resulting powders are comparatively characterised via wettability, solubility, and dispersibility tests. The structural changes in surface-treated ABP are investigated using X-ray photoelectron spectroscopy (XPS) and Fourier-transform infrared spectroscopy (FT-IR) analyses. The results indicate that ABP surface could be switched from hydrophilic (17°) to hydrophobic (115°), its water solubility decreased from 40% to 10%, and a coating yield of approximately 74% was achieved with MgSt dosage of 1?wt% at a processing period of 2?h. Furthermore, FT-IR and XPS results indicated that MgSt is mainly coated over the surface of ABP via physical adsorption rather than chemical bonding. The glaze containing surface-treated ABP that was fired at 1050?°C, demonstrated complete melting and surface coverage without defects. Thus, effective dry coating as a single-step approach could be applied to obtain surface-modified ABP, which offers controlled solubility in glaze suspensions with improved dispersibility and excellent glaze coverage of the surfaces.     

氧化锅生产锑白过程中去除油状氧化渣研究及应用

介绍了恒邦股份公司采用火法锑氧化锅氧化吹炼生产锑白产品,氧化锅生产过程中,因氧化锅熔液表面容易产生一种黑油状氧化渣,俗称“黑油”,覆盖在熔液表面,因没有较为实用的方法用于黑油的除去,不仅增加了员工劳动强度,而且因去除不及时,严重影响了氧化锅吹炼表面积,影响了氧化锅生产效率及锑白产品质量;针对此问题,通过实验研究,最终提出采用试剂硼砂能及时有效的对氧化锅表面黑油渣进行粘附去除,该方法存在操作简单、粘附黑油渣能力强、效率高、没有二次污染等有点,具有较高的应用推广价值。