公开(公告)号：US4376280A

公开(公告)日：1983-03-08

申请号：US250006

申请日：1981-04-01

申请人： Richard H. Davis ,  Brian F. Bracanin ,  Ronald J. Clements

发明人： Richard H. Davis ,  Brian F. Bracanin ,  Ronald J. Clements

IPC分类号： C21B13/08 ,  F27B7/20 ,  G01K1/14 ,  G01K13/08 ,  G08C15/06 ,  G08C19/00 ,  G08C19/16

CPC分类号： G01K13/08 ,  G01K1/14

摘要： A system for monitoring the internal conditions in a rotary kiln is disclosed wherein a series of sensors, such as thermocouples, are installed in ports at various longitudinal and angular coordinates along the total length of the kiln for providing temperature signal samples in the form of sequenced millivolt signals, and a single thermocouple is provided which is insertable in a second series of ports along the kiln to permit immediate localized temperature sensing. The sequenced millivolt signals and the single thermocouple millivolt signals are both fed to respective millivolt-to-milliamp converters mounted on a heat shield on the kiln surface, which shield also mounts two sets of continuous slip rings encircling the kiln. The respective milliamp signals are communicated from the converters to the respective slip ring sets from which they are picked off by suitable stationary contact means disposed adjacent the kiln and conducted to appropriate recorders in a control room. The signals from the series of thermocouples are sequenced by respective routing to a series of junction boxes disposed circumferentially about the kiln shell and successive routing from each junction box under the control of a proximity switch system actuated by means of kiln rotation.

摘要翻译： 公开了一种用于监测回转窑内部条件的系统，其中将一系列传感器（例如热电偶）沿着窑的总长度以各种纵向和角度坐标安装在端口中，以提供温度信号样本的顺序 毫伏信号，并且提供单个热电偶，其可沿着窑炉插入第二系列端口以允许立即局部温度感测。 测序的毫伏信号和单个热电偶毫伏信号都被馈送到安装在窑表面上的隔热罩上的相应的毫伏至毫安转换器，该屏蔽还安装了两组环绕窑的连续滑环。 相应的毫安信号从转换器传送到相应的滑环组件，它们通过邻近窑设置的合适的固定接触装置从其中拾取并被传导到控制室中的合适的记录器。 来自一系列热电偶的信号通过分别布置到围绕窑壳周向设置的一系列接线盒并在通过窑转动致动的接近开关系统的控制下从每个接线盒的连续路由排序。

公开(公告)号：US4378243A

公开(公告)日：1983-03-29

申请号：US266602

申请日：1981-05-22

申请人： Harry W. Hockin, deceased ,  Brian F. Bracanin ,  Ronald J. Clements ,  Vitie P. Keran ,  Alan C. Baker ,  Thomas W. Goodell

发明人： Harry W. Hockin, deceased ,  Brian F. Bracanin ,  Ronald J. Clements ,  Vitie P. Keran ,  Alan C. Baker ,  Thomas W. Goodell

IPC分类号： C21B11/06 ,  C21B13/08

CPC分类号： C21B13/08 ,  Y02P10/216

摘要： A method and means for improved control of the process for directly reducing materials containing iron oxides in a rotary kiln using a solid carbonaceous reducing agent, such as coal, introduced from the charge feed and discharge ends of the kiln, as the source of both fuel and reductant, and oxygen-containing gas introduced along the kiln length is disclosed wherein the portion of the reducing agent fed at the discharge end is blown as a stream in a prescribed manner into the discharge end of the kiln. In particular, the important features of the stream are described including its longitudinal distribution and axial spread over the charge bed, as well as its contact region with the kiln walls and the quandrants of the kiln barrel into which it is directed, whereby the bed and gas phase temperatures may be controlled and heat transfer to the bed enhanced.

摘要翻译： 一种用于直接还原含有铁氧化物的材料的方法和方法，该方法和方法是使用从电荷进料和窑排出端引入的固体碳质还原剂（例如煤）作为两种燃料源 还原剂和沿窑长引入的含氧气体，其中在排出端供给的还原剂部分以规定的方式被吹送到窑的排放端。 特别地，描述了流的重要特征，其包括其在电荷床上的纵向分布和轴向扩展，以及其与窑壁和窑筒的待排入的囤积物的接触区域，由此床和 可以控制气相温度并增强对床的热传递。

公开(公告)号：US4356031A

公开(公告)日：1982-10-26

申请号：US244154

申请日：1981-03-16

申请人： Harry W. Hockin, deceased ,  Brian F. Bracanin ,  Ronald J. Clements ,  Vitie P. Keran ,  Alan C. Baker

发明人： Harry W. Hockin, deceased ,  Brian F. Bracanin ,  Ronald J. Clements ,  Vitie P. Keran ,  Alan C. Baker

IPC分类号： C21B13/08

CPC分类号： C21B13/08 ,  Y02P10/216

摘要： A method and means for maintaining optimum operation of the process for directly reducing iron oxides in a rotary kiln, using a solid carbonaceous reducing agent, such as coal fed at both the charge feed end and discharge end as the source of fuel and reductant, and oxygen-containing gases is disclosed wherein the DRI product, charred coal or char, and fine waste found in the kiln discharge materials from the discharge end are separated and measured for fixed carbon content and the process parameters may be adjusted to optimum by establishing an appropriate percentage by weight, in the range from 5% to 15%, of fixed carbon in the total of these discharge materials. This optimum condition may be monitored by establishing a particular level of char in the char recycle bin once the appropriate percentage by weight of fixed carbon is established in these discharge materials and optimum operation is maintained by maintaining the particular level of the char in the recycle bin and appropriately adjusting the coal feed and related parameters of the process if the char level rises or drops within the bin.

摘要翻译： 使用固体碳质还原剂（例如在电荷进料端和排出端两端供应的煤作为燃料源和还原剂）直接还原回转窑中的铁氧化物的方法和方法，以及 公开了含氧气体，其中分离并测量在窑炉中发现的DRI产物，烧焦煤或焦炭以及从排出端排出的精细废物以测量固定碳含量，并且可以通过建立适当的方法将工艺参数调整到最佳 在这些放电材料的总量中，固体碳的重量百分比在5％至15％的范围内。 通过在这些放电材料中确定适当的重量百分比的固定碳，可以通过在炭回收箱中确定特定水平的炭来监测该最佳条件，并且通过将炭的特定水平保持在回收箱中来保持最佳操作 并适当地调整煤炭进料量和加工过程中的相关参数，如果炭含量在罐内上升或下降。