That is just the Spanish equivalent of a registration certificate. It should say something along the lines of: "Certificado de Registro de Ciudadano de la Union". It acknowledges that you have registered as an EU citizen in Spain. It is definitely not a permanent residency card, but rather the equivalent of a "registration certificate" in the UK.
In order to have your non-eu wife come over to Spain, you can either travel into Spain together using treaty rights, or she can come over by herself if she can prove that you are exercising your treaty rights in Spain, and that you are married—this will require an apostilled copy of your marriage certificate, translated into Spanish & a copy of your work contract.
Alternatively she could also come in as a tourist and you can apply for the "Tarjeta de residencia de familiar de ciudadano de la Unión"
http://extranjeros.empleo.gob.es/es/Inf ... index.html
This is the residency card for EEA family members. I believe current processing times are around 4 months.
