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Spontaneous combustion device and method for preparing superfine La2CuO4 powder at low temperature by ultrasonic-combustion method with assistance of spontaneous combustion device

An ultra-fine powder, combustion method technology, applied in chemical instruments and methods, copper compounds, inorganic chemistry, etc., can solve the problems of inability to prepare ultra-fine powder in large quantities, long self-ignition time, incomplete combustion, etc. Avoid product loss, accelerate dissolution, and promote complete complexation

Inactive Publication Date: 2013-10-23
台州市中元新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the existing non-existing suitable combustion device, resulting in incomplete combustion, too long spontaneous combustion time, and difficult collection, unable to realize large-scale preparation of La 2 CuO 4 In order to solve the problem of ultrafine powder, a kind of self-ignition device and its use of self-ignition device to prepare La at low temperature by ultrasonic-combustion method are provided. 2 CuO 4 Ultrafine powder method

Method used

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  • Spontaneous combustion device and method for preparing superfine La2CuO4 powder at low temperature by ultrasonic-combustion method with assistance of spontaneous combustion device
  • Spontaneous combustion device and method for preparing superfine La2CuO4 powder at low temperature by ultrasonic-combustion method with assistance of spontaneous combustion device

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specific Embodiment approach 1

[0015] Specific implementation mode one: combine figure 1 , this embodiment is a self-ignition device, characterized in that the self-ignition device includes a glass body 1, a cup cover 2, a rubber ring 3 and a joystick 4, a handle 2-1 is set on the cup cover 2, and a handle 2-1 is placed on the cup cover 2. Feeding hole 2-2 and small hole 2-3 are set, oval baffle 4-1 is installed at the bottom of joystick 4, stirring handrail 4-3 is installed at the top of joystick 4, and oval shape is arranged on joystick 4 A compressible bracket 4-2 is installed between the baffle 4-1 and the stirring armrest 4-3; the glass body 1 is an inverted conical glass with an open upper end, and the lid 2 is sealed on the glass body 1 by a rubber ring 3 On, the joystick 4 passes through the small hole 2-3 on the cup cover 2, and the stirring armrest 4-3 on the joystick 4 is placed outside the glass body 1, and the oval baffle 4-1 on the joystick 4 and The compressible support 4-2 is installed in t...

specific Embodiment approach 2

[0018] Specific implementation mode two: combination figure 1 The difference between this embodiment and the first embodiment is that: the cup body and the base of the glass cup body 1 are connected by an arc-shaped corner 1-1. Others are the same as the first embodiment.

[0019] In this embodiment, the corners of the glass cup body are arranged in an arc shape, which is beneficial to the collection of the generated powder.

specific Embodiment approach 3

[0020] Specific implementation mode three: combination figure 1 The difference between this embodiment and the specific embodiment one or two is: the diameter of the small hole 2-3 is set as M, and the diameter of the joystick 4 is set as N, then: 0.2cm<M-N< 0.4cm. Others are the same as those in Embodiment 1 or 2.

[0021] In the present embodiment, the aperture of the small hole 2-3 is larger than the diameter of the joystick 4, which is convenient for the joystick 4 to rotate.

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Abstract

The invention provides a spontaneous combustion device and a method for preparing superfine La2CuO4 powder at a low temperature by an ultrasonic-combustion method with the assistance of the spontaneous combustion device, relates to a method for preparing superfine powder of perovskite-like composite oxide La2CuO4, and aims at solving the problems of incomplete combustion, over long spontaneous combustion time, difficult collection and unavailable mass preparation of superfine La2CuO4 powder due to the lack of a proper combustion device at present. The spontaneous combustion device comprises a glass cup body, a cup cap, a rubber ring and a control lever. The method comprises the following steps of: 1, preparing a solution; 2, mixing; 3, combusting; 4, grinding; and 5, sintering to obtain the superfine La2CuO4 powder. The spontaneous combustion device has the advantages of acceleration of spontaneous combustion, shortening of spontaneous combustion time, visibility in the spontaneous combustion process, powder collection rate increase, massive preparation, complete combustion, and low-temperature sintering. The device and the method are mainly used for preparing the superfine La2CuO4 powder.

Description

technical field [0001] The invention relates to a method for preparing perovskite-like composite oxide La 2 CuO 4 Preparation method of ultrafine powder. Background technique [0002] with perovskite (ABO 3 ) are different, perovskite-like oxides (A 2 BO 4 ) is a Ruddlesdon-Papper type oxide, called layered perovskite oxide, in A 2 BO 4 Among them, the A-site ions are usually rare earth and alkaline earth ions, while the B-site ions are usually fourth-period transition metal ions such as Co, Ni, and Cu. Perovskite-like La 2 CuO 4 La in the middle A position 3+ and B-site Cu 2+ Ions can be isomorphously substituted by other ions, so La 2 CuO 4 And the composite oxide obtained after the A site and the B site are replaced by other ions [Edward A.Stern, Sang-Wook Han, and Daniel Haskel.Dynamic Inhomogeneities in the La 2 CuO 4 -Based Superconductors.Journal of Superconductivity: Incorporating Novel Magnetism, 2004, 17, (1): 97-102], catalytic oxidation [Gao L Z, Ch...

Claims

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Application Information

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IPC IPC(8): C01G3/00
Inventor 赵伟杰张晶奚立民
Owner 台州市中元新材料有限公司
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