SU1522296A1 - Method of producing ferrite charge - Google Patents

Abstract

The invention relates to powder metallurgy, in particular to methods for producing ferrites. The aim of the invention is to increase the efficiency of the process. Manganese and zinc are added to the spent pickling solution with an iron chloride concentration of 240 g / l in the form of manganese carbonate and zinc oxide and nickel in the form of chemical and pharmaceutical production waste, spent René deactivated nickel. The mixture is bubbled, concentrated and sprayed in a kiln, resulting in thermal decomposition of the mixture with the formation of spinel. The decomposition temperature is set at 550-600 ° C, the pressure is 7 atmospheres. Products made from the ferrite charge obtained by this method have the required level of properties, and the use of spent Rane deactivated nickel makes it possible to increase the efficiency of the process due to the possibility of recycling chemical and pharmaceutical production wastes. 2 tab.

Description

The invention relates to powder metallurgy, in particular, to technology for producing ferrite materials.

The purpose of the invention is to improve the efficiency of the process while maintaining a high level of electromagnetic properties.

Example. For the manufacture of the ferrite charge composition,%: iron oxide 70.8, zinc oxide 9.6, manganese oxide 18.7 and nickel oxide 0.9, isg.

used spent pickling solution with a concentration of ferric chloride (FeCla) - 24p g / l, to which the other components were added in the required ratio. Manganese and zinc were introduced into the solution in the form of manganese carbonate and zinc oxide, nickel - in the form of chemical and pharmaceutical production, spent deactivated Rene nickel. The etching solution was mixed with the rest of the ferrite-forming components, including

and with spent deactivated nickel Rene, having a composition, wt.%; Nickel chloride Co; 7 per acid 1-2 t Sulfate ions С, СЗ

Iron0,015

Water ,, The rest was carried out by boiling with compressed air to homogenize the mixture. A mixture of | 0 was fed through a pipeline installation in the heat exchanger, where the solution was concentrated. The mixture was then applied to the nozzles for spraying in roaster, where Tepf i4ecKoe decomposed a mixture of hydrochloric solutions of multicomponent metallic chlorides within a few seconds (s) with the formation of spinel. Upon receipt of the mixture of the specified Q composition, the temperature in the upper cone of the furnace was SO C, the spray pressure was 7 atm. The resulting ferrite powder is precipitated in the conical part of the furnace, the gaseous products passed through a paired cyclone, where the entrained small dust-like fraction of the powder was separated and returned to the furnace.

With proper decomposition. „

/ W

(solution feed rate, pa) the processes of oxide formation and ferritization can be combined in a relatively narrow temperature range.

) obtained by decomposition of chlorides, in ttoMeHT, having a high degree of imperfection, which allows, at 550-600 ° C, to obtain an active mixture having an increased ability to sinter, and to obtain from it dense ferrite products with the required level of properties.

The results of the evaluation of the electromagnetic parameters of the cores obtained from the charge according to the example are presented in Table 1.

The published tabl. 1 shows that the level of electromagnetic parameters of products obtained using chemical and pharmaceutical production wastes of 50 and of the known composition of the mixture is within the same limits.

40

„

0

0

The spent, deactivated, Ranee nickel was used to make the ferrite charge of the composition: - ZnO 22 NiO 12 and, 5 - NiO 1.5. The obtained ferrite powder was tested on ring products with a size of mm.

The results of the evaluation of the electromagnetic parameters of ring products obtained using chemical-pharmaceutical waste; production - spent deactivated nickel Rene, are given in table 2.

From the data of Table 2. it follows that the level of electromagnetic parameters of products obtained using chemical-pharmaceutical wastes, vticheskogo production and from a known composition of the charge, falls within the same limits.

The described technical solution makes it possible to increase the efficiency of the process by using the chemical and pharmaceutical industry as a raw material component. The spent decontaminated Ni-B4 Rene in its properties replaces the previously used nickel oxide, while the electromagnetic parameters of the products obtained from the mixture obtained by the proposed method are kept at the required level.

Using this method ensures creation of waste-free production.

Claims (1)

Invention Formula The method of obtaining ferrite imhta, mainly for nickel-containing ferrites, including the mixing of the initial ferrite components, the maintenance of the nickel-containing component, sputtering and thermal: decomposition of a mixture of multicomponent metal compounds, which are designed to increase the efficiency of the process while maintaining high the level of electromagnetic properties as a nickel-containing component: take the decontaminated nickel from Rene. Order 6971 / 5С Circulation b9b Subscription VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Raushsk nab., D.