工艺

The industrial test for Lanping lead-zinc oxidation mine was carried out in this paper.The results showed that too low recovery rate of zinc was not induced by the flotation process of oxidation zinc mine,and the key point of solving the problem lied in how to reduce the produce rate of gangues and how to increase the recovery rate of the metals in gangues.The economic benefit of this process was also evaluated,the result showed that the economic benefit was obvious when the ores of Jiaya Mountain were trea...

对兰坪铅锌矿氧化矿进行了500t/d的工业试验研究，结果表明，氧化锌回收率较低的原因并非氧化锌浮选工艺的问题，如何降低矿泥的产率和能否回收矿泥中的金属将是解决兰坪难选氧化铅锌矿的关键所在，同时也对该工艺进行了经济效益评估，采用现行工艺处理架崖山工业矿具有一定的经济效益，在进一步完善现有工艺的基础上，具有一定的应用前景。

Research dephosphorizing speed, load of molten iron, oxygen gun site, nitrogen gun site, the flow of oxygen, the flow of nitrogen , nitrogen traffic flow on the pool of the impact, combined with industrial testing, Baosteel Stainless Steel Branch for the actual production process, that the best package of hot metal injection dephosphorization process parameters, Guiding operation at the scene.

摘 要：通过铁水包喷吹脱磷工艺水模拟实验，对不同工艺条件下熔池混匀时间及液面喷溅进行实测，研究了脱磷剂加入速度、铁水装入量、氧枪枪位、喷粉枪枪位、氧气流量、氮气流量对熔池流场的影响规律，并结合工业试验，针对宝钢不锈钢分公司的实际生产工艺，得出了最佳的铁水包喷吹脱磷工艺参数范围，指导现场操作。

Experts believe the project with the traditional lead-smelting technology, has the following characteristics: First, the smelting process to adopt internationally advanced level of oxygen blowing at the end of smelting - to restore the blast furnace method, the use of lead refining electrolysis ; Second, the use of sulfur dioxide gas double-absorption acid technology, the production of domestic water use of recycled water sewage treatment process; Third, the use of waste heat for power generation, waste to make full use of energy reduces energy consumption; Fourth, the high level of automation, low power consumption , Investment, raw materials adaptable, comprehensive recovery rate of high-quality products.

专家认为，该项目与传统炼铅工艺技术相比，具有以下特点：一是冶炼工艺采用具有国际先进水平的氧气底吹熔炼-鼓风炉还原法，铅精炼采用电解法；二是二氧化硫烟气采用两转两吸制酸工艺，生产生活用水采用循环水污水处理工艺；三是利用余热发电，充分利用废弃能源降低了能耗；四是自动化水平高、能耗低、投资省、对原材料适应性强、综合回收率高、产品质量好。

The design introduced aspects as follows, which was emphatically around the sweet vegetable of licorice root production technology, original auxiliary materials nature and their effect on quality of medicinal extracted products; sureness and demonstration of the scheme of the products; demonstration about the technology of Creat medicinal extracted production; selection of equipments; calculation of the capital equipment; building, hygiene, security, and assigning with the total level of the workshop; the factory works and organizes with management and business accounting.

本设计围绕甘草甜素生产工艺着重介绍以下几个方面的内容：原辅材料性质以及它们对甘草甜素质量的影响；产品方案的确定与论证；甘草甜素生产工艺要点及论证；甘草甜素生产工艺设备选型论证，主要设备的工艺计算；生产车间的建筑、卫生、安全、与总平面布置；工厂劳动组织与管理以及经济核算。

The mainly conclusions in our research are as flowing: tungsten trioxide powders with 100 nm primary particle are obtained by spray drying,calcination and wet milling process, and an average size of quadric particle composed of agglomerated particles is 0.64 μm; tungtsen powders with 39 nm grain size and 60 -100 nm primary particle are produced directly from previous tungsten trioxide using one step reduction in hydrogen at 700℃, and an average size of quadric particle of tungsten powder is 2.91 μm; tungsten trioxide and copper tungstate compound powders with 100 nm - 200 nm primary particle are produced using ammonia metatungsten and copper nitrate as raw materials by spray drying,calcination and wet milling process;the compound powders are transformed completely into tungsten and copper compound powders by reduction in hydrogen at 700℃,in which tungsten grain size is 59 nm and copper grain size is 51 nm; primary particle size of compound powders is 80 - 120 nm,and an average size of agglomerated quadric particle is 1.86 μm; tungsten nitride powders with 35 nm grain size are prepared from tungsten trioxide powders by nitrogen treatment thoroughly in pure ammonia at 650℃, and an average size of agglomerated quadric particle is 0.64 μm in normal temperature.

研究结果表明：采用喷雾干燥—焙烧—球磨工艺可以制备出粒度约为100nm的WO_3粉体，它们在团聚后形成的二次颗粒平均粒度为0.64μm；采用一步直接氢还原方法可在700℃下从上述WO_3粉体制备出晶粒尺寸为39nm的、一次颗粒粒度为60-100nm的W粉体，其二次颗粒的平均粒度为2.91μm；以偏钨酸铵、硝酸铜为原料，采用喷雾干燥—焙烧—球磨工艺可制备出一次粒度为100-200nm的WO_3和CuWO_4混合粉体；采用氢还原工艺可在700℃下将这种粉体完全转变为W、Cu复合粉体，其中W的平均晶粒粒尺寸为59nm，Cu的平均晶粒尺寸为51nm；复合粉体的一次颗粒尺寸为80-120nm，在常温下团聚后形成的二次平均粒度为1.86μm；采用纯氨氮化工艺可以在650℃下由WO_3粉体制得WN，其晶粒尺度为35nm，在常温下团聚后的二次平均粒度为6.4μm。

Frigon was chosen as the experimental, According the quality of the heavy oil materials which have high oil content and low sericin content, technical conditions were initially set at the level of low pH value 、low temperature and enforced presoaking process. And then, these surfactants and builders were chosen to test in the presoaking and refining process, getting some kinds of surfactants with lowest oil content on refined waste silk. Following that, they were tested for best oil-removing effect in mixture.

实验中，选择了滞头原料为试验原料，根据绢纺愿料冶胶量低，含油量高的特点，初步确定了低pH值、低温和加强预浸的工艺方案，然后对所选的各类表面活性剂和助剂进行了预浸、精练工艺试验，从中选出较好的几个品种进行不同类型的复配试验，在复配的基础上试验工艺条件—温度、时间、碱用量对残油率、残胶率的影响确定小样最佳工艺。

In order to satisfy the demend of the technology, drew a flow flate, and made an accurate calculation for all aspects of the tower as follows: the technology condition, the data of material quality, the tower body, the size of the tower plate.

本设计为了满足生产工艺的要求，绘制了工艺流程图，对精馏塔进行物料衡算和塔的工艺条件及物性数据进行了计算，并对塔体、塔板工艺尺寸作了计算。

In chapter 2, based on the samples of TP7725 high speed WEDM machine from ShangHai wireless apparatus factory and DK7725e high speed WEDM machine from SuZhou SanGuang electromechanical corporation, the virtues and defects of known process databases are given. For the TP7725 machine which has complete database liner regression model and nonlinear regression model are brought out. The two models are compared for goodness of fit and prediction. And the process regularity is analyzed.

第二章以上海无专厂的TP7725型号线切割机床和苏州三光的DK7725e型号线切割机床为例，分析了国内现存的线切割工艺数据库优缺点；对已存在较完善工艺数据库的TP7725机床，应用其已有工艺数据，分别进行了线性和非线性回归建模，并根据试验结果进行了比较和工艺规律分析。

In order to solve the difficulties in producing and welding tiny bridge-belt ,twn methods- producing by electrochemical etching and laser welding with powder cladding were put forward.

针对微型桥带的成型与焊接工艺难题，提出了采用电化学刻蚀成型和利用粉末熔覆工艺进行激光焊接的工艺方法，并给出了具体的工艺过程，成功地实现了低成本、高质量、成批量的工业生产要求。

The top coal fracture is described distinctly under the condition of different roof span and mining technology parameters. Through orthogonal experiment of numerical simulation, the rational pretreatment span of hard roof is determined, and the rational working resistance of support is selected also. As a result: the hard roof is effectively controlled not only to protect the working face but also to promote the caving of hard top coal to increase the recovery ratio.

在有效控制坚硬顶板的基础上，利用数值模拟正交试验法，研究了采高、采放比、支架阻力、放煤步距等工艺参数对顶煤压裂效果的影响规律，从而对工作面工艺参数进行优化；并根据实验所得放煤方式对块体顶煤的适应性规律，选择&两硬&综放面的放煤工艺，从而形成了系统、完善的&两硬&条件综放工艺。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。